text: The discovery of nuclear fission by German chemists Otto Hahn and Fritz Strassmann in 1938, and its theoretical explanation by Lise Meitner and Otto Frisch, made the development of an atomic bomb a theoretical possibility. Fears that a German atomic bomb project would develop atomic weapons first, especially among scientists who were refugees from Nazi Germany and other fascist countries, were expressed in the Einstein–Szilard letter in 1939. This prompted preliminary research in the United States in late 1939. Progress was slow until the arrival of the British MAUD Committee report in late 1941, which indicated that only 5 to 10 kilograms of isotopically enriched uranium-235 were needed for a bomb instead of tons of natural uranium and a neutron moderator like heavy water.


title: Atomic bombings of Hiroshima and Nagasaki

text: The 1943 Quebec Agreement merged the nuclear weapons projects of the United Kingdom and Canada, Tube Alloys and the Montreal Laboratory, with the Manhattan Project, under the direction of Major General Leslie R. Groves, Jr., of the U.S. Army Corps of Engineers. Groves appointed J. Robert Oppenheimer to organize and head the project's Los Alamos Laboratory in New Mexico, where bomb design work was carried out. Two types of bombs were eventually developed, both named by Robert Serber. Little Boy was a gun-type fission weapon that used uranium-235, a rare isotope of uranium separated at the Clinton Engineer Works at Oak Ridge, Tennessee. The other, known as a Fat Man device, was a more powerful and efficient, but more complicated, implosion-type nuclear weapon that used plutonium created in nuclear reactors at Hanford, Washington.


text: There was a Japanese nuclear weapon program, but it lacked the human, mineral and financial resources of the Manhattan Project, and never made much progress towards developing an atomic bomb.


text: The 509th Composite Group was constituted on 9 December 1944, and activated on 17 December 1944, at Wendover Army Air Field, Utah, commanded by Colonel Paul Tibbets. Tibbets was assigned to organize and command a combat group to develop the means of delivering an atomic weapon against targets in Germany and Japan. Because the flying squadrons of the group consisted of both bomber and transport aircraft, the group was designated as a "composite" rather than a "bombardment" unit. Working with the Manhattan Project at Los Alamos, Tibbets selected Wendover for his training base over Great Bend, Kansas, and Mountain Home, Idaho, because of its remoteness. Each bombardier completed at least 50 practice drops of inert or conventional explosive pumpkin bombs and Tibbets declared his group combat-ready. On 5 April 1945, the code name Operation Centerboard was assigned. The officer responsible for its allocation in the War Department's Operations Division was not cleared to know any details of it. The first bombing was later codenamed Operation Centerboard I, and the second, Operation Centerboard II.


text: The 509th Composite Group had an authorized strength of 225 officers and 1,542 enlisted men, almost all of whom eventually deployed to Tinian. In addition to its authorized strength, the 509th had attached to it on Tinian 51 civilian and military personnel from Project Alberta, known as the 1st Technical Detachment. The 509th Composite Group's 393d Bombardment Squadron was equipped with 15 Silverplate B-29s. These aircraft were specially adapted to carry nuclear weapons, and were equipped with fuel-injected engines, Curtiss Electric reversible-pitch propellers, pneumatic actuators for rapid opening and closing of bomb bay doors and other improvements.


text: The ground support echelon of the 509th Composite Group moved by rail on 26 April 1945, to its port of embarkation at Seattle, Washington. On 6 May the support elements sailed on the SS "Cape Victory" for the Marianas, while group materiel was shipped on the SS "Emile Berliner". The "Cape Victory" made brief port calls at Honolulu and Eniwetok but the passengers were not permitted to leave the dock area. An advance party of the air echelon, consisting of 29 officers and 61 enlisted men, flew by C-54 to North Field on Tinian, between 15 and 22 May. There were also two representatives from Washington, D.C., Brigadier General Thomas Farrell, the deputy commander of the Manhattan Project, and Rear Admiral William R. Purnell of the Military Policy Committee, who were on hand to decide higher policy matters on the spot. Along with Captain William S. Parsons, the commander of Project Alberta, they became known as the "Tinian Joint Chiefs".


text: In April 1945, Marshall asked Groves to nominate specific targets for bombing for final approval by himself and Stimson. Groves formed a Target Committee, chaired by himself, that included Farrell, Major John A. Derry, Colonel William P. Fisher, Joyce C. Stearns and David M. Dennison from the USAAF; and scientists John von Neumann, Robert R. Wilson and William Penney from the Manhattan Project. The Target Committee met in Washington on 27 April; at Los Alamos on 10 May, where it was able to talk to the scientists and technicians there; and finally in Washington on 28 May, where it was briefed by Tibbets and Commander Frederick Ashworth from Project Alberta, and the Manhattan Project's scientific advisor, Richard C. Tolman.


text: The Target Committee nominated five targets: Kokura (now Kitakyushu), the site of one of Japan's largest munitions plants; Hiroshima, an embarkation port and industrial center that was the site of a major military headquarters; Yokohama, an urban center for aircraft manufacture, machine tools, docks, electrical equipment and oil refineries; Niigata, a port with industrial facilities including steel and aluminum plants and an oil refinery; and Kyoto, a major industrial center. The target selection was subject to the following criteria:


text: These cities were largely untouched during the nightly bombing raids, and the Army Air Forces agreed to leave them off the target list so accurate assessment of the damage caused by the atomic bombs could be made. Hiroshima was described as "an important army depot and port of embarkation in the middle of an urban industrial area. It is a good radar target and it is such a size that a large part of the city could be extensively damaged. There are adjacent hills which are likely to produce a focusing effect which would considerably increase the blast damage. Due to rivers it is not a good incendiary target."


text: The Target Committee stated that "It was agreed that psychological factors in the target selection were of great importance. Two aspects of this are (1) obtaining the greatest psychological effect against Japan and (2) making the initial use sufficiently spectacular for the importance of the weapon to be internationally recognized when publicity on it is released... Kyoto has the advantage of the people being more highly intelligent and hence better able to appreciate the significance of the weapon. Hiroshima has the advantage of being such a size and with possible focussing from nearby mountains that a large fraction of the city may be destroyed. The Emperor's palace in Tokyo has a greater fame than any other target but is of least strategic value."


text: Edwin O. Reischauer, a Japan expert for the U.S. Army Intelligence Service, was incorrectly said to have prevented the bombing of Kyoto. In his autobiography, Reischauer specifically refuted this claim:


text: On 30 May, Stimson asked Groves to remove Kyoto from the target list due to its historical, religious and cultural significance, but Groves pointed to its military and industrial significance. Stimson then approached President Harry S. Truman about the matter. Truman agreed with Stimson, and Kyoto was temporarily removed from the target list. Groves attempted to restore Kyoto to the target list in July, but Stimson remained adamant. On 25 July, Nagasaki was put on the target list in place of Kyoto. It was a major military port, one of Japan's largest shipbuilding and repair centers, and an important producer of naval ordnance.


text: In early May 1945, the Interim Committee was created by Stimson at the urging of leaders of the Manhattan Project and with the approval of Truman to advise on matters pertaining to nuclear energy. During the meetings on 31 May and 1 June, scientist Ernest Lawrence had suggested giving the Japanese a non-combat demonstration. Arthur Compton later recalled that:


text: The possibility of a demonstration was raised again in the Franck Report issued by physicist James Franck on 11 June and the Scientific Advisory Panel rejected his report on 16 June, saying that "we can propose no technical demonstration likely to bring an end to the war; we see no acceptable alternative to direct military use." Franck then took the report to Washington, D.C., where the Interim Committee met on 21 June to re-examine its earlier conclusions; but it reaffirmed that there was no alternative to the use of the bomb on a military target.


text: Like Compton, many U.S. officials and scientists argued that a demonstration would sacrifice the shock value of the atomic attack, and the Japanese could deny the atomic bomb was lethal, making the mission less likely to produce surrender. Allied prisoners of war might be moved to the demonstration site and be killed by the bomb. They also worried that the bomb might be a failure, as the Trinity test was that of a stationary device, not an air-dropped bomb. In addition, although more bombs were in production, only two would be available at the start of August, and they cost billions of dollars, so using one for a demonstration would be expensive.


text: For several months, the U.S. had warned civilians of potential air raids by dropping more than 63 million leaflets across Japan. Many Japanese cities suffered terrible damage from aerial bombings; some were as much as 97 percent destroyed. LeMay thought that leaflets would increase the psychological impact of bombing, and reduce the international stigma of area-bombing cities. Even with the warnings, Japanese opposition to the war remained ineffective. In general, the Japanese regarded the leaflet messages as truthful, with many Japanese choosing to leave major cities. The leaflets caused such concern that the government ordered the arrest of anyone caught in possession of a leaflet. Leaflet texts were prepared by recent Japanese prisoners of war because they were thought to be the best choice "to appeal to their compatriots".


text: In preparation for dropping an atomic bomb on Hiroshima, the Oppenheimer-led Scientific Panel of the Interim Committee decided against a demonstration bomb and against a special leaflet warning. Those decisions were implemented because of the uncertainty of a successful detonation and also because of the wish to maximize shock in the leadership. No warning was given to Hiroshima that a new and much more destructive bomb was going to be dropped. Various sources gave conflicting information about when the last leaflets were dropped on Hiroshima prior to the atomic bomb. Robert Jay Lifton wrote that it was 27 July, and Theodore H. McNelly wrote that it was 30 July. The USAAF history noted that eleven cities were targeted with leaflets on 27 July, but Hiroshima was not one of them, and there were no leaflet sorties on 30 July. Leaflet sorties were undertaken on 1 and 4 August. Hiroshima may have been leafleted in late July or early August, as survivor accounts talk about a delivery of leaflets a few days before the atomic bomb was dropped. Three versions were printed of a leaflet listing 11 or 12 cities targeted for firebombing; a total of 33 cities listed. With the text of this leaflet reading in Japanese "...we cannot promise that only these cities will be among those attacked..." Hiroshima was not listed.


text: In 1943, the United States and the United Kingdom signed the Quebec Agreement, which stipulated that nuclear weapons would not be used against another country without mutual consent. Stimson therefore had to obtain British permission. A meeting of the Combined Policy Committee, which included one Canadian representative, was held at the Pentagon on 4 July 1945. Field Marshal Sir Henry Maitland Wilson announced that the British government concurred with the use of nuclear weapons against Japan, which would be officially recorded as a decision of the Combined Policy Committee. As the release of information to third parties was also controlled by the Quebec Agreement, discussion then turned to what scientific details would be revealed in the press announcement of the bombing. The meeting also considered what Truman could reveal to Joseph Stalin, the leader of the Soviet Union, at the upcoming Potsdam Conference, as this also required British concurrence.


text: Orders for the attack were issued to General Carl Spaatz on 25 July under the signature of General Thomas T. Handy, the acting chief of staff, since Marshall was at the Potsdam Conference with Truman. It read:


text: The 16 July success of the Trinity Test in the New Mexico desert exceeded expectations. On 26 July, Allied leaders issued the Potsdam Declaration, which outlined the terms of surrender for Japan. The declaration was presented as an ultimatum and stated that without a surrender, the Allies would attack Japan, resulting in "the inevitable and complete destruction of the Japanese armed forces and just as inevitably the utter devastation of the Japanese homeland". The atomic bomb was not mentioned in the communiqué.


text: On 28 July, Japanese papers reported that the declaration had been rejected by the Japanese government. That afternoon, Prime Minister Kantarō Suzuki declared at a press conference that the Potsdam Declaration was no more than a rehash ("yakinaoshi") of the Cairo Declaration, that the government intended to ignore it ("mokusatsu", "kill by silence"), and that Japan would fight to the end. The statement was taken by both Japanese and foreign papers as a clear rejection of the declaration. Emperor Hirohito, who was waiting for a Soviet reply to non-committal Japanese peace feelers, made no move to change the government position. Japan's willingness to surrender remained conditional on the preservation of the "kokutai" (Imperial institution and national polity), assumption by the Imperial Headquarters of responsibility for disarmament and demobilization, no occupation of the Japanese Home Islands, Korea or Formosa, and delegation of the punishment of war criminals to the Japanese government.


text: At Potsdam, Truman agreed to a request from Winston Churchill that Britain be represented when the atomic bomb was dropped. William Penney and Group Captain Leonard Cheshire were sent to Tinian, but found that LeMay would not let them accompany the mission. All they could do was send a strongly worded signal to Wilson.


text: The Little Boy bomb, except for the uranium payload, was ready at the beginning of May 1945. There were two uranium-235 components, a hollow cylindrical projectile and a cylindrical target insert. The projectile was completed on 15 June, and the target insert on 24 July. The projectile and eight bomb pre-assemblies (partly assembled bombs without the powder charge and fissile components) left Hunters Point Naval Shipyard, California, on 16 July aboard the cruiser , and arrived on Tinian on 26 July. The target insert followed by air on 30 July, accompanied by Commander Francis Birch from Project Alberta. Responding to concerns expressed by the 509th Composite Group about the possibility of a B-29 crashing on takeoff, Birch had modified the Little Boy design to incorporate a removable breech plug that would permit the bomb to be armed in flight.


text: The first plutonium core, along with its polonium-beryllium urchin initiator, was transported in the custody of Project Alberta courier Raemer Schreiber in a magnesium field carrying case designed for the purpose by Philip Morrison. Magnesium was chosen because it does not act as a neutron reflector. The core departed from Kirtland Army Air Field on a C-54 transport aircraft of the 509th Composite Group's 320th Troop Carrier Squadron on 26 July, and arrived at North Field 28 July. Three Fat Man high-explosive pre-assemblies, designated F31, F32, and F33, were picked up at Kirtland on 28 July by three B-29s, two from the 393d Bombardment Squadron plus one from the 216th Army Air Force Base Unit, and transported to North Field, arriving on 2 August.


text: At the time of its bombing, Hiroshima was a city of industrial and military significance. A number of military units were located nearby, the most important of which was the headquarters of Field Marshal Shunroku Hata's Second General Army, which commanded the defense of all of southern Japan, and was located in Hiroshima Castle. Hata's command consisted of some 400,000 men, most of whom were on Kyushu where an Allied invasion was correctly anticipated. Also present in Hiroshima were the headquarters of the 59th Army, the 5th Division and the 224th Division, a recently formed mobile unit. The city was defended by five batteries of 70 mm and 80 mm (2.8 and 3.1 inch) anti-aircraft guns of the 3rd Anti-Aircraft Division, including units from the 121st and 122nd Anti-Aircraft Regiments and the 22nd and 45th Separate Anti-Aircraft Battalions. In total, an estimated 40,000 Japanese military personnel were stationed in the city.


text: Hiroshima was a supply and logistics base for the Japanese military. The city was a communications center, a key port for shipping, and an assembly area for troops. It supported a large war industry, manufacturing parts for planes and boats, for bombs, rifles, and handguns. The center of the city contained several reinforced concrete buildings and lighter structures. Outside the center, the area was congested by a dense collection of small timber workshops set among Japanese houses. A few larger industrial plants lay near the outskirts of the city. The houses were constructed of timber with tile roofs, and many of the industrial buildings were also built around timber frames. The city as a whole was highly susceptible to fire damage. It was the second largest city in Japan after Kyoto that was still undamaged by air raids, primarily because it lacked the aircraft manufacturing industry that was the XXI Bomber Command's priority target. On 3 July, the Joint Chiefs of Staff placed it off limits to bombers, along with Kokura, Niigata and Kyoto.


text: The population of Hiroshima had reached a peak of over 381,000 earlier in the war but prior to the atomic bombing, the population had steadily decreased because of a systematic evacuation ordered by the Japanese government. At the time of the attack, the population was approximately 340,000–350,000. Residents wondered why Hiroshima had been spared destruction by firebombing. Some speculated that the city was to be saved for U.S. occupation headquarters, others thought perhaps their relatives in Hawaii and California had petitioned the U.S. government to avoid bombing Hiroshima. More realistic city officials had ordered buildings torn down to create long, straight firebreaks. These continued to be expanded and extended up to the morning of 6 August 1945.


text: Hiroshima was the primary target of the first atomic bombing mission on 6 August, with Kokura and Nagasaki as alternative targets. The 393d Bombardment Squadron B-29 "Enola Gay", named after Tibbets's mother and piloted by Tibbets, took off from North Field, Tinian, about six hours' flight time from Japan. "Enola Gay" was accompanied by two other B-29s: "The Great Artiste", commanded by Major Charles Sweeney, which carried instrumentation, and a then-nameless aircraft later called "Necessary Evil", commanded by Captain George Marquardt. "Necessary Evil" was the photography aircraft.


text: After leaving Tinian, the aircraft made their way separately to Iwo Jima to rendezvous with Sweeney and Marquardt at 05:55 at , and set course for Japan. The aircraft arrived over the target in clear visibility at . Parsons, who was in command of the mission, armed the bomb in flight to minimize the risks during takeoff. He had witnessed four B-29s crash and burn at takeoff, and feared that a nuclear explosion would occur if a B-29 crashed with an armed Little Boy on board. His assistant, Second Lieutenant Morris R. Jeppson, removed the safety devices 30 minutes before reaching the target area.


text: During the night of 5–6 August, Japanese early warning radar detected the approach of numerous American aircraft headed for the southern part of Japan. Radar detected 65 bombers headed for Saga, 102 bound for Maebashi, 261 en route to Nishinomiya, 111 headed for Ube and 66 bound for Imabari. An alert was given and radio broadcasting stopped in many cities, among them Hiroshima. The all-clear was sounded in Hiroshima at 00:05. About an hour before the bombing, the air raid alert was sounded again, as "Straight Flush" flew over the city. It broadcast a short message which was picked up by "Enola Gay". It read: "Cloud cover less than 3/10th at all altitudes. Advice: bomb primary." The all-clear was sounded over Hiroshima again at 07:09.


text: At 08:09, Tibbets started his bomb run and handed control over to his bombardier, Major Thomas Ferebee. The release at 08:15 (Hiroshima time) went as planned, and the Little Boy containing about of uranium-235 took 44.4 seconds to fall from the aircraft flying at about to a detonation height of about above the city. "Enola Gay" traveled before it felt the shock waves from the blast.


text: Due to crosswind, the bomb missed the aiming point, the Aioi Bridge, by approximately and detonated directly over Shima Surgical Clinic. It released the equivalent energy of . The weapon was considered very inefficient, with only 1.7 percent of its material fissioning. The radius of total destruction was about , with resulting fires across .


text: "Enola Gay" stayed over the target area for two minutes and was away when the bomb detonated. Only Tibbets, Parsons, and Ferebee knew of the nature of the weapon; the others on the bomber were only told to expect a blinding flash and given black goggles. "It was hard to believe what we saw", Tibbets told reporters, while Parsons said "the whole thing was tremendous and awe-inspiring... the men aboard with me gasped 'My God'." He and Tibbets compared the shockwave to "a close burst of ack-ack fire".


text: People on the ground reported a —a brilliant flash of light—followed by a —a loud booming sound. Some 70,000–80,000 people, around 30 percent of the population of Hiroshima at the time, were killed by the blast and resultant firestorm, and another 70,000 were injured. It is estimated that as many as 20,000 Japanese military personnel were killed. U.S. surveys estimated that of the city were destroyed. Japanese officials determined that 69 percent of Hiroshima's buildings were destroyed and another 6 to 7 percent damaged.


text: Some of the reinforced concrete buildings in Hiroshima had been very strongly constructed because of the earthquake danger in Japan, and their framework did not collapse even though they were fairly close to the blast center. Since the bomb detonated in the air, the blast was directed more downward than sideways, which was largely responsible for the survival of the Prefectural Industrial Promotional Hall, now commonly known as the "Genbaku" (A-bomb) dome, which was only from ground zero (the hypocenter). The ruin was named "Hiroshima Peace Memorial" and was made a UNESCO World Heritage Site in 1996 over the objections of the United States and China, which expressed reservations on the grounds that other Asian nations were the ones who suffered the greatest loss of life and property, and a focus on Japan lacked historical perspective. The bombing started intense fires that spread rapidly through timber and paper homes, burning everything in a radius of . As in other Japanese cities, the firebreaks proved ineffective.


text: The air raid warning had been cleared at 07:31, and many people were outside, going about their activities. Eizō Nomura was the closest known survivor, being in the basement of a reinforced concrete building (it remained as the "Rest House" after the war) only from ground zero at the time of the a|ttack. He died in 1982, aged 84. Akiko Takakura was among the closest survivors to the hypocenter of the blast. She was in the solidly-built Bank of Hiroshima only from ground-zero at the time of the attack.


text: Over 90 percent of the doctors and 93 percent of the nurses in Hiroshima were killed or injured—most had been in the downtown area which received the greatest damage. The hospitals were destroyed or heavily damaged. Only one doctor, Terufumi Sasaki, remained on duty at the Red Cross Hospital. Nonetheless, by early afternoon the police and volunteers had established evacuation centres at hospitals, schools and tram stations, and a morgue was established in the Asano library. Survivors of the blast gathered for medical treatment, but many would die before receiving any help, leaving behind rings of corpses around hospitals.


text: Most elements of the Japanese Second General Army headquarters were undergoing physical training on the grounds of Hiroshima Castle, barely from the hypocenter. The attack killed 3,243 troops on the parade ground. The communications room of Chugoku Military District Headquarters that was responsible for issuing and lifting air raid warnings was located in a semi-basement in the castle. Yoshie Oka, a Hijiyama Girls High School student who had been mobilized to serve as a communications officer, had just sent a message that the alarm had been issued for Hiroshima and neighboring Yamaguchi, when the bomb exploded. She used a special phone to inform Fukuyama Headquarters (some away) that "Hiroshima has been attacked by a new type of bomb. The city is in a state of near-total destruction."


text: Since Mayor Senkichi Awaya had been killed while eating breakfast with his son and granddaughter at the mayoral residence, Field Marshal Shunroku Hata, who was only slightly wounded, took over the administration of the city, and coordinated relief efforts. Many of his staff had been killed or fatally wounded, including Lieutenant Colonel Yi U, a prince of the Korean imperial family who was serving as a General Staff Officer. Hata's senior surviving staff officer was the wounded Colonel Kumao Imoto, who acted as his chief of staff. Soldiers from the undamaged Hiroshima Ujina Harbor used s, intended to repel the American invasion, to collect the wounded and take them down the rivers to the military hospital at Ujina. Trucks and trains brought in relief supplies and evacuated survivors from the city.


text: Twelve American airmen were imprisoned at the Chugoku Military Police Headquarters, about from the hypocenter of the blast. Most died instantly, although two were reported to have been executed by their captors, and two prisoners badly injured by the bombing were left next to the Aioi Bridge by the "Kempei Tai", where they were stoned to death. Eight U.S. prisoners of war killed as part of the medical experiments program at Kyushu University were falsely reported by Japanese authorities as having been killed in the atomic blast as part of an attempted cover up.


text: The Tokyo control operator of the Japan Broadcasting Corporation noticed that the Hiroshima station had gone off the air. He tried to re-establish his program by using another telephone line, but it too had failed. About 20 minutes later the Tokyo railroad telegraph center realized that the main line telegraph had stopped working just north of Hiroshima. From some small railway stops within of the city came unofficial and confused reports of a terrible explosion in Hiroshima. All these reports were transmitted to the headquarters of the Imperial Japanese Army General Staff.


text: Military bases repeatedly tried to call the Army Control Station in Hiroshima. The complete silence from that city puzzled the General Staff; they knew that no large enemy raid had occurred and that no sizable store of explosives was in Hiroshima at that time. A young officer was instructed to fly immediately to Hiroshima, to land, survey the damage, and return to Tokyo with reliable information for the staff. It was felt that nothing serious had taken place and that the explosion was just a rumor.


text: The staff officer went to the airport and took off for the southwest. After flying for about three hours, while still nearly from Hiroshima, he and his pilot saw a great cloud of smoke from the firestorm created by the bomb. After circling the city to survey the damage they landed south of the city, where the staff officer, after reporting to Tokyo, began to organize relief measures. Tokyo's first indication that the city had been destroyed by a new type of bomb came from President Truman's announcement of the strike, sixteen hours later.


text: After the Hiroshima bombing, Truman issued a statement announcing the use of the new weapon. He stated, "We may be grateful to Providence" that the German atomic bomb project had failed, and that the United States and its allies had "spent two billion dollars on the greatest scientific gamble in history—and won". Truman then warned Japan: "If they do not now accept our terms, they may expect a rain of ruin from the air, the like of which has never been seen on this earth. Behind this air attack will follow sea and land forces in such numbers and power as they have not yet seen and with the fighting skill of which they are already well aware." This was a widely broadcast speech picked up by Japanese news agencies.


text: The 50,000-watt standard wave station on Saipan, the OWI radio station, broadcast a similar message to Japan every 15 minutes about Hiroshima, stating that more Japanese cities would face a similar fate in the absence of immediate acceptance of the terms of the Potsdam Declaration and emphatically urged civilians to evacuate major cities. Radio Japan, which continued to extoll victory for Japan by never surrendering, had informed the Japanese of the destruction of Hiroshima by a single bomb. Prime Minister Suzuki felt compelled to meet the Japanese press, to whom he reiterated his government's commitment to ignore the Allies' demands and fight on.


text: Soviet Foreign Minister Vyacheslav Molotov had informed Tokyo of the Soviet Union's unilateral abrogation of the Soviet–Japanese Neutrality Pact on 5 April. At two minutes past midnight on 9 August, Tokyo time, Soviet infantry, armor, and air forces had launched the Manchurian Strategic Offensive Operation. Four hours later, word reached Tokyo of the Soviet Union's official declaration of war. The senior leadership of the Japanese Army began preparations to impose martial law on the nation, with the support of Minister of War Korechika Anami, to stop anyone attempting to make peace.


text: On 7 August, a day after Hiroshima was destroyed, Dr. Yoshio Nishina and other atomic physicists arrived at the city, and carefully examined the damage. They then went back to Tokyo and told the cabinet that Hiroshima was indeed destroyed by a nuclear weapon. Admiral Soemu Toyoda, the Chief of the Naval General Staff, estimated that no more than one or two additional bombs could be readied, so they decided to endure the remaining attacks, acknowledging "there would be more destruction but the war would go on". American Magic codebreakers intercepted the cabinet's messages.


text: Purnell, Parsons, Tibbets, Spaatz, and LeMay met on Guam that same day to discuss what should be done next. Since there was no indication of Japan surrendering, they decided to proceed with dropping another bomb. Parsons said that Project Alberta would have it ready by 11 August, but Tibbets pointed to weather reports indicating poor flying conditions on that day due to a storm, and asked if the bomb could be readied by 9 August. Parsons agreed to try to do so.


text: The city of Nagasaki had been one of the largest seaports in southern Japan, and was of great wartime importance because of its wide-ranging industrial activity, including the production of ordnance, ships, military equipment, and other war materials. The four largest companies in the city were Mitsubishi Shipyards, Electrical Shipyards, Arms Plant, and Steel and Arms Works, which employed about 90 percent of the city's labor force, and accounted for 90 percent of the city's industry. Although an important industrial city, Nagasaki had been spared from firebombing because its geography made it difficult to locate at night with AN/APQ-13 radar.


text: Unlike the other target cities, Nagasaki had not been placed off limits to bombers by the Joint Chiefs of Staff's 3 July directive, and was bombed on a small scale five times. During one of these raids on 1 August, a number of conventional high-explosive bombs were dropped on the city. A few hit the shipyards and dock areas in the southwest portion of the city, and several hit the Mitsubishi Steel and Arms Works. By early August, the city was defended by the 134th Anti-Aircraft Regiment of the 4th Anti-Aircraft Division with four batteries of anti-aircraft guns and two searchlight batteries.


text: In contrast to Hiroshima, almost all of the buildings were of old-fashioned Japanese construction, consisting of timber or timber-framed buildings with timber walls (with or without plaster) and tile roofs. Many of the smaller industries and business establishments were also situated in buildings of timber or other materials not designed to withstand explosions. Nagasaki had been permitted to grow for many years without conforming to any definite city zoning plan; residences were erected adjacent to factory buildings and to each other almost as closely as possible throughout the entire industrial valley. On the day of the bombing, an estimated 263,000 people were in Nagasaki, including 240,000 Japanese residents, 10,000 Korean residents, 2,500 conscripted Korean workers, 9,000 Japanese soldiers, 600 conscripted Chinese workers, and 400 Allied prisoners of war in a camp to the north of Nagasaki.


text: Responsibility for the timing of the second bombing was delegated to Tibbets. Scheduled for 11 August against Kokura, the raid was moved earlier by two days to avoid a five-day period of bad weather forecast to begin on 10 August. Three bomb pre-assemblies had been transported to Tinian, labeled F-31, F-32, and F-33 on their exteriors. On 8 August, a dress rehearsal was conducted off Tinian by Sweeney using "Bockscar" as the drop airplane. Assembly F-33 was expended testing the components and F-31 was designated for the 9 August mission.


text: At 03:47 Tinian time (GMT+10), 02:47 Japanese time on the morning of 9 August 1945, "Bockscar", flown by Sweeney's crew, lifted off from Tinian island with the Fat Man, with Kokura as the primary target and Nagasaki the secondary target. The mission plan for the second attack was nearly identical to that of the Hiroshima mission, with two B-29s flying an hour ahead as weather scouts and two additional B-29s in Sweeney's flight for instrumentation and photographic support of the mission. Sweeney took off with his weapon already armed but with the electrical safety plugs still engaged.


text: During pre-flight inspection of "Bockscar", the flight engineer notified Sweeney that an inoperative fuel transfer pump made it impossible to use of fuel carried in a reserve tank. This fuel would still have to be carried all the way to Japan and back, consuming still more fuel. Replacing the pump would take hours; moving the Fat Man to another aircraft might take just as long and was dangerous as well, as the bomb was live. Tibbets and Sweeney therefore elected to have "Bockscar" continue the mission.


text: This time Penney and Cheshire were allowed to accompany the mission, flying as observers on the third plane, "Big Stink", flown by the group's operations officer, Major James I. Hopkins, Jr. Observers aboard the weather planes reported both targets clear. When Sweeney's aircraft arrived at the assembly point for his flight off the coast of Japan, "Big Stink" failed to make the rendezvous. According to Cheshire, Hopkins was at varying heights including higher than he should have been, and was not flying tight circles over Yakushima as previously agreed with Sweeney and Captain Frederick C. Bock, who was piloting the support B-29 "The Great Artiste". Instead, Hopkins was flying dogleg patterns. Though ordered not to circle longer than fifteen minutes, Sweeney continued to wait for "Big Stink" for forty minutes. Before leaving the rendezvous point, Sweeney consulted Ashworth, who was in charge of the bomb. As commander of the aircraft, Sweeney made the decision to proceed to the primary, the city of Kokura.


text: After exceeding the original departure time limit by nearly a half-hour, "Bockscar", accompanied by "The Great Artiste", proceeded to Kokura, thirty minutes away. The delay at the rendezvous had resulted in clouds and drifting smoke over Kokura from fires started by a major firebombing raid by 224 B-29s on nearby Yahata the previous day. Additionally, the Yahata Steel Works intentionally burned coal tar, to produce black smoke. The clouds and smoke resulted in 70 percent of the area over Kokura being covered, obscuring the aiming point. Three bomb runs were made over the next 50 minutes, burning fuel and exposing the aircraft repeatedly to the heavy defenses around Kokura, but the bombardier was unable to drop visually. By the time of the third bomb run, Japanese anti-aircraft fire was getting close, and Second Lieutenant Jacob Beser, who was monitoring Japanese communications, reported activity on the Japanese fighter direction radio bands.


text: With fuel running low because of the failed fuel pump, "Bockscar" and "The Great Artiste" headed for their secondary target, Nagasaki. Fuel consumption calculations made en route indicated that "Bockscar" had insufficient fuel to reach Iwo Jima and would be forced to divert to Okinawa, which had become entirely Allied-occupied territory only six weeks earlier. After initially deciding that if Nagasaki were obscured on their arrival the crew would carry the bomb to Okinawa and dispose of it in the ocean if necessary, Ashworth agreed with Sweeney's suggestion that a radar approach would be used if the target was obscured. At about 07:50 Japanese time, an air raid alert was sounded in Nagasaki, but the "all clear" signal was given at 08:30. When only two B-29 Superfortresses were sighted at 10:53 Japanese Time (GMT+9), the Japanese apparently assumed that the planes were only on reconnaissance and no further alarm was given.


text: A few minutes later at 11:00 Japanese Time, "The Great Artiste" dropped instruments attached to three parachutes. These instruments also contained an unsigned letter to Professor Ryokichi Sagane, a physicist at the University of Tokyo who studied with three of the scientists responsible for the atomic bomb at the University of California, Berkeley, urging him to tell the public about the danger involved with these weapons of mass destruction. The messages were found by military authorities but not turned over to Sagane until a month later. In 1949, one of the authors of the letter, Luis Alvarez, met with Sagane and signed the letter.


text: At 11:01 Japanese Time, a last-minute break in the clouds over Nagasaki allowed "Bockscar"s bombardier, Captain Kermit Beahan, to visually sight the target as ordered. The Fat Man weapon, containing a core of about of plutonium, was dropped over the city's industrial valley. It exploded 47 seconds later at 11:02 Japanese Time at , above a tennis court, halfway between the Mitsubishi Steel and Arms Works in the south and the Nagasaki Arsenal in the north. This was nearly northwest of the planned hypocenter; the blast was confined to the Urakami Valley and a major portion of the city was protected by the intervening hills. The resulting explosion released the equivalent energy of . "Big Stink" spotted the explosion from away, and flew over to observe.


text: "Bockscar" flew on to Okinawa, arriving with only sufficient fuel for a single approach. Sweeney tried repeatedly to contact the control tower for landing clearance, but received no answer. He could see heavy air traffic landing and taking off from Yontan Airfield. Firing off every flare on board to alert the field to his emergency landing, the "Bockscar" came in fast, landing at instead of the normal . The number two engine died from fuel starvation as he began the final approach. Touching down on only three engines midway down the landing strip, "Bockscar" bounced up into the air again for about before slamming back down hard. The heavy B-29 slewed left and towards a row of parked B-24 bombers before the pilots managed to regain control. Its reversible propellers were insufficient to slow the aircraft adequately, and with both pilots standing on the brakes, "Bockscar" made a swerving 90-degree turn at the end of the runway to avoid running off it. A second engine died from fuel exhaustion before the plane came to a stop.


text: Following the mission, there was confusion over the identification of the plane. The first eyewitness account by war correspondent William L. Laurence of "The New York Times", who accompanied the mission aboard the aircraft piloted by Bock, reported that Sweeney was leading the mission in "The Great Artiste". He also noted its "Victor" number as 77, which was that of "Bockscar". Laurence had interviewed Sweeney and his crew, and was aware that they referred to their airplane as "The Great Artiste". Except for "Enola Gay", none of the 393d's B-29s had yet had names painted on the noses, a fact which Laurence himself noted in his account. Unaware of the switch in aircraft, Laurence assumed Victor 77 was "The Great Artiste", which was in fact, Victor 89.


text: Although the bomb was more powerful than the one used on Hiroshima, its effects were confined by hillsides to the narrow Urakami Valley. Of 7,500 Japanese employees who worked inside the Mitsubishi Munitions plant, including "mobilized" students and regular workers, 6,200 were killed. Some 17,000–22,000 others who worked in other war plants and factories in the city died as well. Casualty estimates for immediate deaths vary widely, ranging from 22,000 to 75,000. At least 35,000–40,000 people were killed and 60,000 others injured. In the days and months following the explosion, more people died from their injuries. Because of the presence of undocumented foreign workers, and a number of military personnel in transit, there are great discrepancies in the estimates of total deaths by the end of 1945; a range of 39,000 to 80,000 can be found in various studies.


text: Unlike Hiroshima's military death toll, only 150 Japanese soldiers were killed instantly, including 36 from the 134th AAA Regiment of the 4th AAA Division. At least eight Allied prisoners of war (POWs) died from the bombing, and as many as thirteen may have died. The eight confirmed deaths included a British POW, Royal Air Force Corporal Ronald Shaw, and seven Dutch POWs. One American POW, Joe Kieyoomia, was in Nagasaki at the time of the bombing but survived, reportedly having been shielded from the effects of the bomb by the concrete walls of his cell. There were 24 Australian POWs in Nagasaki, all of whom survived.


text: The radius of total destruction was about , followed by fires across the northern portion of the city to south of the bomb. About 58 percent of the Mitsubishi Arms Plant was damaged, and about 78 percent of the Mitsubishi Steel Works. The Mitsubishi Electric Works suffered only 10 percent structural damage as it was on the border of the main destruction zone. The Nagasaki Arsenal was destroyed in the blast. Although many fires likewise burnt following the bombing, in contrast to Hiroshima where sufficient fuel density was available, no firestorm developed in Nagasaki as the damaged areas did not furnish enough fuel to generate the phenomenon. Instead, ambient wind pushed the fire spread along the valley.


text: As in Hiroshima, the bombing badly dislocated the city's medical facilities. A makeshift hospital was established at the Shinkozen Primary School, which served as the main medical centre. The trains were still running, and evacuated many victims to hospitals in nearby towns. A medical team from a naval hospital reached the city in the evening, and fire-fighting brigades from the neighboring towns assisted in fighting the fires. Takashi Nagai was a doctor working in the radiology department of Nagasaki Medical College Hospital. He received a serious injury that severed his right temporal artery, but joined the rest of the surviving medical staff in treating bombing victims.


text: Groves expected to have another "Fat Man" atomic bomb ready for use on 19 August, with three more in September and a further three in October; a second Little Boy bomb (using U-235) would not be available until December 1945. On 10 August, he sent a memorandum to Marshall in which he wrote that "the next bomb ... should be ready for delivery on the first suitable weather after 17 or 18 August." Marshall endorsed the memo with the hand-written comment, "It is not to be released over Japan without express authority from the President", something Truman had requested that day. This modified the previous order that the target cities were to be attacked with atomic bombs "as made ready". There was already discussion in the War Department about conserving the bombs then in production for Operation Downfall, and Marshall suggested to Stimson that the remaining cities on the target list be spared attack with atomic bombs.


text: Two more Fat Man assemblies were readied, and scheduled to leave Kirtland Field for Tinian on 11 and 14 August, and Tibbets was ordered by LeMay to return to Albuquerque, New Mexico, to collect them. At Los Alamos, technicians worked 24 hours straight to cast another plutonium core. Although cast, it still needed to be pressed and coated, which would take until 16 August. Therefore, it could have been ready for use on 19 August. Unable to reach Marshall, Groves ordered on his own authority on 13 August that the core should not be shipped.


text: Until 9 August, Japan's war council still insisted on its four conditions for surrender. The full cabinet met at 14:30 on 9 August, and spent most of the day debating surrender. Anami conceded that victory was unlikely, but argued in favor of continuing the war nonetheless. The meeting ended at 17:30, with no decision having been reached. Suzuki went to the palace to report on the outcome of the meeting, where he met with Kōichi Kido, the Lord Keeper of the Privy Seal of Japan. Kido informed him that the emperor had agreed to hold an imperial conference, and gave a strong indication that the emperor would consent to surrender on condition that "kokutai" be preserved. A second cabinet meeting was held at 18:00. Only four ministers supported Anami's position of adhering to the four conditions, but since cabinet decisions had to be unanimous, no decision was reached before it ended at 22:00.


text: Calling an imperial conference required the signatures of the prime minister and the two service chiefs, but the Chief Cabinet Secretary Hisatsune Sakomizu had already obtained signatures from Toyoda and General Yoshijirō Umezu in advance, and he reneged on his promise to inform them if a meeting was to be held. The meeting commenced at 23:50. No consensus had emerged by 02:00 on 10 August, but the emperor gave his "sacred decision", authorizing the Foreign Minister, Shigenori Tōgō, to notify the Allies that Japan would accept their terms on one condition, that the declaration "does not comprise any demand which prejudices the prerogatives of His Majesty as a Sovereign ruler."


text: On 12 August, the Emperor informed the imperial family of his decision to surrender. One of his uncles, Prince Asaka, then asked whether the war would be continued if the "kokutai" could not be preserved. Hirohito simply replied, "Of course." As the Allied terms seemed to leave intact the principle of the preservation of the Throne, Hirohito recorded on 14 August his capitulation announcement which was broadcast to the Japanese nation the next day despite a short rebellion by militarists opposed to the surrender.


text: In his declaration's fifth paragraph, Hirohito solely mentions the duration of the conflict; and did not explicitly mention the Soviets as a factor for surrender:


text: The sixth paragraph by Hirohito specifically mentions the use of nuclear ordnance devices against Japan by the United States, from the aspect of the unprecedented damage they caused:


text: In his "Rescript to the Soldiers and Sailors" delivered on 17 August, Hirohito did not refer to the atomic bombs or possible human extinction, and instead described the Soviet declaration of war as "endangering the very foundation of the Empire's existence."


text: On 10 August 1945, the day after the Nagasaki bombing, military photographer Yōsuke Yamahata, correspondent Higashi, and artist Yamada arrived in the city with instructions to record the destruction for propaganda purposes. Yamahata took scores of photographs, and on 21 August, they appeared in "Mainichi Shimbun", a popular Japanese newspaper. After Japan's surrender and the arrival of American forces, copies of his photographs were seized amid the ensuing censorship, but some records have survived.


text: Leslie Nakashima, a former United Press (UP) journalist, filed the first personal account of the scene to appear in American newspapers. He observed that large numbers of survivors continued to die from what later became recognized as radiation poisoning. On 31 August, "The New York Times" published an abbreviated version of his 27 August UP article. Nearly all references to uranium poisoning were omitted. An editor's note was added to say that, according to American scientists, "the atomic bomb will not have any lingering after-effects."


text: Wilfred Burchett was also one of the first Western journalists to visit Hiroshima after the bombing. He arrived alone by train from Tokyo on 2 September, defying the traveling ban put in place on Western correspondents. Burchett's Morse code dispatch, "The Atomic Plague", was printed by the "Daily Express" newspaper in London on 5 September 1945. The reports from Nakashima and Burchett informed the public for the first time of the gruesome effects of radiation and nuclear fallout—radiation burns and radiation poisoning, sometimes lasting more than thirty days after the blast. Burchett especially noted that people were dying "horribly" after bleeding from orifices, and their flesh would rot away from the injection holes where vitamin A was administered, to no avail.


text: "The New York Times" then apparently reversed course and ran a front-page story by Bill Lawrence confirming the existence of a terrifying affliction in Hiroshima, where many had symptoms such as hair loss and vomiting of blood before dying. Lawrence had gained access to the city as part of a press junket promoting the U.S. Army Air Force. Some reporters were horrified by the scene, however, referring to what they saw as a "death laboratory" littered with "human guinea pigs". General MacArthur found the reporting to have turned from good PR into bad PR and threatened to court martial the entire group. He withdrew Burchett's press accreditation and expelled the journalist from the occupation zones. The authorities also accused him of being under the sway of Japanese propaganda and later suppressed another story, on the Nagasaki bombing, by George Weller of the "Chicago Daily News". Less than a week after his "New York Times" story was published, Lawrence also backtracked and dismissed the reports on radiation sickness as Japanese efforts to undermine American morale.


text: A member of the U.S. Strategic Bombing Survey, Lieutenant Daniel McGovern, used a film crew to document the effects of the bombings in early 1946. The film crew shot of film, resulting in a three-hour documentary titled "The Effects of the Atomic Bombs Against Hiroshima and Nagasaki". The documentary included images from hospitals showing the human effects of the bomb; it showed burned-out buildings and cars, and rows of skulls and bones on the ground. It was classified "secret" for the next 22 years. Motion picture company "Nippon Eigasha" started sending cameramen to Nagasaki and Hiroshima in September 1945. On 24 October 1945, a U.S. military policeman stopped a "Nippon Eigasha" cameraman from continuing to film in Nagasaki. All "Nippon Eigasha" reels were confiscated by the American authorities, but they were requested by the Japanese government, and declassified. The public release of film footage of the city post-attack, and some research about the effects of the attack, was restricted during the occupation of Japan, but the Hiroshima-based magazine, "Chugoku Bunka", in its first issue published on 10 March 1946, devoted itself to detailing the damage from the bombing.


text: The book "Hiroshima", written by Pulitzer Prize winner John Hersey, which was originally published in article form in the popular magazine "The New Yorker", on 31 August 1946, is reported to have reached Tokyo in English by January 1947, and the translated version was released in Japan in 1949. It narrated the stories of the lives of six bomb survivors from immediately prior to, and months after, the dropping of the Little Boy bomb. Beginning in 1974, a compilation of drawings and artwork made by the survivors of the bombings began to be compiled, with completion in 1977, and under both book and exhibition format, it was titled "The Unforgettable Fire".


text: The bombing amazed Otto Hahn and other German atomic scientists, whom the British held at Farm Hall in Operation Epsilon. Hahn stated that he had not believed an atomic weapon "would be possible for another twenty years"; Werner Heisenberg did not believe the news at first. Carl Friedrich von Weizsäcker said "I think it's dreadful of the Americans to have done it. I think it is madness on their part", but Heisenberg replied, "One could equally well say 'That's the quickest way of ending the war'". Hahn was grateful that the German project had not succeeded in developing "such an inhumane weapon"; Karl Wirtz observed that even if it had, "we would have obliterated London but would still not have conquered the world, and then they would have dropped them on us".


text: Hahn told the others, "Once I wanted to suggest that all uranium should be sunk to the bottom of the ocean". The Vatican agreed; "L'Osservatore Romano" expressed regret that the bomb's inventors did not destroy the weapon for the benefit of humanity. Rev. Cuthbert Thicknesse, the dean of St Albans, prohibited using St Albans Abbey for a thanksgiving service for the war's end, calling the use of atomic weapons "an act of wholesale, indiscriminate massacre". Nonetheless, news of the atomic bombing was greeted enthusiastically in the U.S.; a poll in "Fortune" magazine in late 1945 showed a significant minority of Americans (23 percent) wishing that more atomic bombs could have been dropped on Japan. The initial positive response was supported by the imagery presented to the public (mainly the powerful images of the mushroom cloud). During this time in America, it was a common practice for editors to keep graphic images of death out of films, magazines, and newspapers.


text: An estimated 90,000 to 140,000 people in Hiroshima (up to 39 percent of the population) and 60,000 to 80,000 people in Nagasaki (up to 32 percent of the population) died in 1945, though the number which died immediately as a result of exposure to the blast, heat, or due to radiation, is unknown. One Atomic Bomb Casualty Commission report discusses 6,882 people examined in Hiroshima and 6,621 people examined in Nagasaki, who were largely within of the hypocenter, who suffered injuries from the blast and heat but died from complications frequently compounded by acute radiation syndrome (ARS), all within about 20 to 30 days. Many people not injured by the blast eventually died within that timeframe as well after suffering from ARS. At the time, the doctors had no idea what the cause was and were unable to effectively treat the condition. Midori Naka was the first death officially certified to be the result of radiation poisoning or, as it was referred to by many, the "atomic bomb disease". She was some from the hypocenter at Hiroshima and would die on 24 August 1945 after traveling to Tokyo. It was unappreciated at the time but the average radiation dose that would kill approximately 50 percent of adults (the LD50) was approximately halved; that is, smaller doses were made more lethal when the individual experienced concurrent blast or burn polytraumatic injuries. Conventional skin injuries that cover a large area frequently result in bacterial infection; the risk of sepsis and death is increased when a usually non-lethal radiation dose moderately suppresses the white blood cell count.


text: In the spring of 1948, the Atomic Bomb Casualty Commission (ABCC) was established in accordance with a presidential directive from Truman to the National Academy of Sciences–National Research Council to conduct investigations of the late effects of radiation among the survivors in Hiroshima and Nagasaki. In 1956, the ABCC published "The Effect of Exposure to the Atomic Bombs on Pregnancy Termination in Hiroshima and Nagasaki". The ABCC became the Radiation Effects Research Foundation (RERF) on 1 April 1975. A binational organization run by both the United States and Japan, the RERF is still in operation today.


text: Cancers do not immediately emerge after exposure to radiation; instead, radiation-induced cancer has a minimum latency period of some five years and above, and leukemia some two years and above, peaking around six to eight years later. Dr Jarrett Foley published the first major reports on the significant increased incidence of the latter among survivors. Almost all cases of leukemia over the following 50 years were in people exposed to more than 1Gy. In a strictly dependent manner dependent on their distance from the hypocenter, in the 1987 "Life Span Study", conducted by the Radiation Effects Research Foundation, a statistical excess of 507 cancers, of undefined lethality, were observed in 79,972 "hibakusha" who had still been living between 1958 and 1987 and who took part in the study. As the epidemiology study continues with time, the RERF estimates that, from 1950 to 2000, 46 percent of leukemia deaths which may include Sadako Sasaki and 11 percent of solid cancers of unspecified lethality were likely due to radiation from the bombs or some other post-attack city effects, with the statistical excess being 200 leukemia deaths and 1,700 solid cancers of undeclared lethality. Both of these statistics being derived from the observation of approximately half of the total survivors, strictly those who took part in the study. A meta-analysis from 2016 found that radiation exposure increases cancer risk, but also that the average lifespan of survivors was reduced by only a few months compared to those not exposed to radiation.


text: While during the preimplantation period, that is one to ten days following conception, intrauterine radiation exposure of "at least 0.2 Gy" can cause complications of implantation and death of the human embryo. The number of miscarriages caused by the radiation from the bombings, during this radiosensitive period, is not known.


text: One of the early studies conducted by the ABCC was on the outcome of pregnancies occurring in Hiroshima and Nagasaki, and in a control city, Kure, located south of Hiroshima, to discern the conditions and outcomes related to radiation exposure. James V. Neel led the study which found that the overall number of birth defects was not significantly higher among the children of survivors who were pregnant at the time of the bombings. He also studied the longevity of the children who survived the bombings of Hiroshima and Nagasaki, reporting that between 90 and 95 percent were still living 50 years later.


text: While The National Academy of Sciences raised the possibility that Neel's procedure did not filter the Kure population for possible radiation exposure which could bias the results, overall, a statistically insignificant increase in birth defects occurred directly after the bombings of Nagasaki and Hiroshima when the cities were taken as wholes, in terms of distance from the hypocenters. However, Neel and others noted that in approximately 50 humans who were of an early gestational age at the time of the bombing and who were all within about of the hypocenter, an increase in microencephaly and anencephaly was observed upon birth, with the incidence of these two particular malformations being nearly 3 times what was to be expected when compared to the control group in Kure, where approximately 20 cases were observed in a similar sample size.


text: In 1985, Johns Hopkins University geneticist James F. Crow examined Neel's research and confirmed that the number of birth defects was not significantly higher in Hiroshima and Nagasaki. Many members of the ABCC and its successor Radiation Effects Research Foundation (RERF) were still looking for possible birth defects among the survivors decades later, but found no evidence that they were significantly common among the survivors or inherited in the children of survivors.


text: Despite the small sample size of 1,600 to 1,800 persons who came forth as prenatally exposed at the time of the bombings, that were both within a close proximity to the two hypocenters, to survive the "in utero" absorption of a substantial dose of radiation and then the malnourished post-attack environment, data from this cohort does support the increased risk of severe mental retardation (SMR), that was observed in some 30 individuals, with SMR being a common outcome of the aforementioned microencephaly. While a lack of statistical data, with just 30 individuals out of 1,800, prevents a definitive determination of a threshold point, the data collected suggests a threshold intrauterine or "fetal" dose for SMR, at the most radiosensitive period of cognitive development, when there is the largest number of undifferentiated neural cells (8 to 15 weeks post-conception) to begin at a threshold dose of approximately "0.09" to "0.15" Gy, with the risk then linearly increasing to a 43-percent rate of SMR when exposed to a fetal dose of 1 Gy at any point during these weeks of rapid neurogenesis.


text: However either side of this radiosensitive age, none of the prenatally exposed to the bombings at an age "less than" 8 weeks, that is prior to synaptogenesis or at a gestational age "more than" 26 weeks "were observed to be mentally retarded", with the condition therefore being isolated to those solely of 8–26 weeks of age and who absorbed more than approximately "0.09" to "0.15" Gy of "prompt" radiation energy.


text: Examination of the prenatally exposed in terms of IQ performance and school records, determined the beginning of a statistically significant reduction in both, when exposed to greater than 0.1 to 0.5 gray, during the same gestational period of 8–25 weeks. However outside this period, at less than 8 weeks and greater than 26 after conception, "there is no evidence of a radiation-related effect on scholastic performance."


text: The reporting of doses in terms of absorbed energy in units of grays and rads – rather than the biologically significant, biologically weighted sievert in both the SMR and cognitive performance data – is typical. The reported threshold dose variance between the two cities is suggested to be a manifestation of the difference between X-ray and neutron absorption, with Little Boy emitting substantially more neutron flux, whereas the Baratol that surrounded the core of Fat Man filtered or shifted the absorbed neutron-radiation profile, so that the dose of radiation energy received in Nagasaki was mostly that from exposure to X-rays/gamma rays. Contrast this to the environment within 1500 meters of the hypocenter at Hiroshima, where the in-utero dose depended more on the absorption of neutrons which have a higher biological effect per unit of energy absorbed. From the radiation dose reconstruction work, which were also informed by the 1962 BREN Tower Japanese city analog, the estimated dosimetry at Hiroshima still has the largest uncertainty as the Little Boy bomb design was never tested before deployment or afterward, therefore the estimated radiation profile absorbed by individuals at Hiroshima had required greater reliance on calculations than the Japanese soil, concrete and roof-tile measurements which began to reach accurate levels and thereby inform researchers, in the 1990s.


text: Many other investigations into cognitive outcomes, such as schizophrenia as a result of prenatal exposure, have been conducted with "no statistically significant linear relationship seen". There is a suggestion that in the most extremely exposed, those who survived within a kilometer or so of the hypocenters, a trend emerges akin to that seen in SMR, though the sample size is too small to determine with any significance.


text: The survivors of the bombings are called , a Japanese word that literally translates to "explosion-affected people". The Japanese government has recognized about 650,000 people as "hibakusha". , 118,935 were still alive, mostly in Japan. The government of Japan recognizes about one percent of these as having illnesses caused by radiation. The memorials in Hiroshima and Nagasaki contain lists of the names of the "hibakusha" who are known to have died since the bombings. Updated annually on the anniversaries of the bombings, , the memorials record the names of 526,000 "hibakusha"; 333,907 in Hiroshima and 192,310 in Nagasaki.


text: If they discuss their background, "hibakusha" and their children were (and still are) victims of fear-based discrimination and exclusion when it comes to prospects of marriage or work due to public ignorance about the consequences of radiation sickness or that the low doses that the majority received were less than a routine diagnostic x-ray, much of the public however persist with the belief that the "hibakusha" carry some hereditary or even contagious disease. This is despite the fact that no statistically demonstrable increase of birth defects/congenital malformations was found among the "later conceived" children born to survivors of the nuclear weapons used at Hiroshima and Nagasaki, or indeed has been found in the later conceived children of cancer survivors who had previously received radiotherapy.


text: The surviving women of Hiroshima and Nagasaki, that could conceive, who were exposed to substantial amounts of radiation, went on and had children with no higher incidence of abnormalities/birth defects than the rate which is observed in the Japanese average.


text: A study of the long-term psychological effects of the bombings on the survivors found that even 17–20 years after the bombings had occurred survivors showed a higher prevalence of anxiety and somatization symptoms.


text: Perhaps as many as 200 people from Hiroshima sought refuge in Nagasaki. The 2006 documentary "Twice Survived: The Doubly Atomic Bombed of Hiroshima and Nagasaki" documented 165 "nijū hibakusha" (lit. "double explosion-affected people"), nine of whom claimed to be in the blast zone in both cities. On 24 March 2009, the Japanese government officially recognized Tsutomu Yamaguchi as a double "hibakusha". He was confirmed to be from ground zero in Hiroshima on a business trip when the bomb was detonated. He was seriously burnt on his left side and spent the night in Hiroshima. He arrived at his home city of Nagasaki on 8 August, the day before the bombing, and he was exposed to residual radiation while searching for his relatives. He was the first officially recognized survivor of both bombings. He died on 4 January 2010, at age 93, of stomach cancer.


text: During the war, Japan brought as many as 670,000 Korean conscripts to Japan to work as forced labor. About 5,000–8,000 Koreans were killed in Hiroshima and another 1,500–2,000 died in Nagasaki. For many years, Korean survivors had a difficult time fighting for the same recognition as "Hibakusha" as afforded to all Japanese survivors, a situation which resulted in the denial of the free health benefits to them in Japan. Most issues were eventually addressed in 2008 through lawsuits.


text: Hiroshima was subsequently struck by Typhoon Ida on 17 September 1945. More than half the bridges were destroyed, and the roads and railroads were damaged, further devastating the city. The population increased from 83,000 soon after the bombing to 146,000 in February 1946. The city was rebuilt after the war, with help from the national government through the Hiroshima Peace Memorial City Construction Law passed in 1949. It provided financial assistance for reconstruction, along with land donated that was previously owned by the national government and used for military purposes. In 1949, a design was selected for the Hiroshima Peace Memorial Park. Hiroshima Prefectural Industrial Promotion Hall, the closest surviving building to the location of the bomb's detonation, was designated the Hiroshima Peace Memorial. The Hiroshima Peace Memorial Museum was opened in 1955 in the Peace Park. Hiroshima also contains a Peace Pagoda, built in 1966 by Nipponzan-Myōhōji.


text: On January 27, 1981, the Atomic Bombing Relic Selecting Commitee of Hiroshima announced to build commemorative plaques at nine historical sites related to the bombing in the year. Genbaku Dome, Shima Hospital (hypocenter), all unveiled plaques with historical photographs and descriptions. The rest sites planned including Hondō Shopping Street, Motomachi No.2 Army Hospital site, , , and Hiroshima Station. The committee also planned to establish 30 commemorative plaques in three years.


text: Nagasaki was also rebuilt after the war, but was dramatically changed in the process. The pace of reconstruction was initially slow, and the first simple emergency dwellings were not provided until 1946. The focus on redevelopment was the replacement of war industries with foreign trade, shipbuilding and fishing. This was formally declared when the Nagasaki International Culture City Reconstruction Law was passed in May 1949. New temples were built, as well as new churches owing to an increase in the presence of Christianity. Some of the rubble was left as a memorial, such as a "torii" at Sannō Shrine, and an arch near ground zero. New structures were also raised as memorials, such as the Nagasaki Atomic Bomb Museum, which was opened in the mid-1990s.


text: The role of the bombings in Japan's surrender, and the ethical, legal, and military controversies surrounding the United States' justification for them have been the subject of scholarly and popular debate. On one hand, it has been argued that the bombings caused the Japanese surrender, thereby preventing casualties that an invasion of Japan would have involved. Stimson talked of saving one million casualties. The naval blockade might have starved the Japanese into submission without an invasion, but this would also have resulted in many more Japanese deaths.


text: However, critics of the bombings have cited a belief that atomic weapons are fundamentally immoral, that the bombings were war crimes, and that they constituted state terrorism. Others, such as historian Tsuyoshi Hasegawa, argued that the entry of the Soviet Union into the war against Japan "played a much greater role than the atomic bombs in inducing Japan to surrender because it dashed any hope that Japan could terminate the war through Moscow's mediation". A view among critics of the bombings, popularized by American historian Gar Alperovitz in 1965, is the idea of atomic diplomacy: that the United States used nuclear weapons to intimidate the Soviet Union in the early stages of the Cold War. James Orr wrote that this idea became the accepted position in Japan and that it may have played some part in the decision making of the US government.


text: The manner in which World War II ended cast a long shadow over international relations for decades afterwards. By 30 June 1946, there were components for nine atomic bombs in the US arsenal, all Fat Man devices identical to the one used in the bombing of Nagasaki. The nuclear weapons were handmade devices, and a great deal of work remained to improve their ease of assembly, safety, reliability and storage before they were ready for production. There were also many improvements to their performance that had been suggested or recommended, but that had not been possible under the pressure of wartime development. The Chairman of the Joint Chiefs of Staff, Fleet Admiral William D. Leahy, decried the use of the atomic bombs as adopting "an ethical standard common to the barbarians of the Dark Ages", but in October 1947 he reported a military requirement for 400 bombs.


text: The American monopoly on nuclear weapons lasted four years before the Soviet Union detonated an atomic bomb in September 1949. The United States responded with the development of the hydrogen bomb, a nuclear weapon a thousand times as powerful as the bombs that devastated Hiroshima and Nagasaki. Such ordinary fission bombs would henceforth be regarded as small tactical nuclear weapons. By 1986, the United States had 23,317 nuclear weapons and the Soviet Union had 40,159. In early 2019, more than 90% of the world's 13,865 nuclear weapons were owned by the United States and Russia.


text: By 2020, nine nations had nuclear weapons, but Japan was not one of them. Japan reluctantly signed the Treaty on the Non-Proliferation of Nuclear Weapons in February 1970, but is still sheltered under the American nuclear umbrella. American nuclear weapons were stored on Okinawa, and sometimes in Japan itself, albeit in contravention of agreements between the two nations. Lacking the resources to fight the Soviet Union using conventional forces, the Western Alliance came to depend on the use of nuclear weapons to defend itself during the Cold War, a policy that became known in the 1950s as the New Look. In the decades after Hiroshima and Nagasaki, the United States would threaten to use its nuclear weapons many times.


text: On 7 July 2017, more than 120 countries voted to adopt the UN Treaty on the Prohibition of Nuclear Weapons. Elayne Whyte Gómez, President of the UN negotiations on the nuclear ban treaty, said, "the world has been waiting for this legal norm for 70 years," since the atomic bombings of Hiroshima and Nagasaki in August 1945. , Japan has not signed the treaty.


title: Romania

text: Romania ( ; ) is a country located at the crossroads of Central, Eastern, and Southeast Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, Serbia to the southwest, Moldova to the east, and the Black Sea to the southeast. It has a predominantly temperate-continental climate, and an area of , with a population of around 19 million. Romania is the twelfth-largest country in Europe and the sixth-most populous member state of the European Union. Its capital and largest city is Bucharest, followed by Iași, Cluj-Napoca, Timișoara, Constanța, Craiova, Brașov, and Galați.


title: Romania

text: The Danube, Europe's second-longest river, rises in Germany's Black Forest and flows in a southeasterly direction for , before emptying into Romania's Danube Delta. The Carpathian Mountains, which cross Romania from the north to the southwest, include Moldoveanu Peak, at an altitude of .


title: Romania

text: Settlement in what is now Romania began in the Lower Paleolithic, with written records attesting the kingdom of Dacia, its conquest and subsequent Latinization by the Roman Empire. The modern Romanian state was formed in 1859 through a personal union of the Danubian Principalities of Moldavia and Wallachia. The new state, officially named Romania since 1866, gained independence from the Ottoman Empire in 1877. During World War I, after declaring its neutrality in 1914, Romania fought together with the Allied Powers from 1916. In the aftermath of the war, Bukovina, Bessarabia, Transylvania, and parts of Banat, Crișana, and Maramureș became part of the Kingdom of Romania. In June–August 1940, as a consequence of the Molotov–Ribbentrop Pact and Second Vienna Award, Romania was compelled to cede Bessarabia and Northern Bukovina to the Soviet Union and Northern Transylvania to Hungary. In November 1940, Romania signed the Tripartite Pact and, consequently, in June 1941 entered World War II on the Axis side, fighting against the Soviet Union until August 1944, when it joined the Allies and recovered Northern Transylvania. Following the war and occupation by the Red Army, Romania became a socialist republic and a member of the Warsaw Pact. After the 1989 Revolution, Romania began a transition towards democracy and a market economy.


title: Romania

text: Romania is a developing country with a high-income economy, ranking 53rd in the Human Development Index. It has the world's 47th largest economy by nominal GDP. Romania experienced rapid economic growth in the early 2000s; its economy is now based predominantly on services. It is a producer and net exporter of machines and electric energy through companies like Automobile Dacia and OMV Petrom. Romania has been a member of the United Nations since 1955, NATO since 2004 and the European Union (EU) since 2007. The majority of Romania's population are ethnic Romanian and religiously identify themselves as Eastern Orthodox Christians, speaking Romanian, a Romance language. The Romanian Orthodox Church is the largest (and most traditional) church of the country.


title: Romania

text: "Romania" derives from the local name for Romanian (), which in turn derives from Latin "romanus", meaning "Roman" or "of Rome". This ethnonym for Romanians is first attested in the 16th century by Italian humanists travelling in Transylvania, Moldavia, and Wallachia. The oldest known surviving document written in Romanian, a 1521 letter known as the "Letter of Neacșu from Câmpulung", is notable for including the first documented occurrence of "Romanian" in a country name: Wallachia is mentioned as .


title: Romania

text: Two spelling forms: and were used interchangeably until sociolinguistic developments in the late 17th century led to semantic differentiation of the two forms: came to mean "bondsman", while retained the original ethnolinguistic meaning. After the abolition of serfdom in 1746, the word "rumân" gradually fell out of use and the spelling stabilised to the form . Tudor Vladimirescu, a revolutionary leader of the early 19th century, used the term to refer exclusively to the principality of Wallachia.


title: Romania

text: The use of the name "Romania" to refer to the common homeland of all Romanians—its modern-day meaning—was first documented in the early 19th century.


title: Romania

text: In English, the name of the country was formerly spelt "Rumania" or "Roumania". "Romania" became the predominant spelling around 1975. "Romania" is also the official English-language spelling used by the Romanian government. A handful of other languages (including Italian, Hungarian, Portuguese, and Norwegian) have also switched to "o" like English, but most languages continue to prefer forms with "u", e.g. French , German and Swedish , Dutch (oe pronounced as Spanish u), Spanish (the archaic form is still in use in Spain), Polish , Russian (), and Japanese ().


title: Romania

text: Human remains found in Peștera cu Oase ("Cave with Bones"), radiocarbon date from circa 40,000 years ago, and represent the oldest known "Homo sapiens" in Europe. Neolithic agriculture spread after the arrival of a mixed group of people from Thessaly in the 6th millennium BC. Excavations near a salt spring at Lunca yielded the earliest evidence for salt exploitation in Europe; here salt production began between the 5th and 4th millennium BC. The first permanent settlements developed into "proto-cities", which were larger than . The Cucuteni–Trypillia culture—the best known archaeological culture of Old Europe—flourished in Muntenia, southeastern Transylvania and northeastern Moldavia in the 3rd millennium BC.


title: Romania

text: The first fortified settlements appeared around 1800 BC, showing the militant character of Bronze Age societies.


title: Romania

text: Greek colonies established on the Black Sea coast in the 7th century BC became important centres of commerce with the local tribes. Among the native peoples, Herodotus listed the Getae of the Lower Danube region, the Agathyrsi of Transylvania and the Syginnae of the plains along the river Tisza at the beginning of the 5th century BC. Centuries later, Strabo associated the Getae with the Dacians who dominated the lands along the southern Carpathian Mountains in the 1st century BC. Burebista was the first Dacian ruler to unite the local tribes. He also conquered the Greek colonies in Dobruja and the neighbouring peoples as far as the Middle Danube and the Balkan Mountains between around 55 and 44 BC. After Burebista was murdered in 44 BC, his kingdom collapsed.


title: Romania

text: The Romans reached Dacia during Burebista's reign and conquered Dobruja in 46 AD. Dacia was again united under Decebalus around 85 AD. He resisted the Romans for decades, but the Roman army defeated his troops in 106 AD. Emperor Trajan transformed Banat, Oltenia and the greater part of Transylvania into a new province called Roman Dacia, but Dacian, Germanic and Sarmatian tribes continued to dominate the lands along the Roman frontiers. The Romans pursued an organised colonisation policy, and the provincials enjoyed a long period of peace and prosperity in the 2nd century. Scholars accepting the Daco-Roman continuity theory—one of the main theories about the origin of the Romanians—say that the cohabitation of the native Dacians and the Roman colonists in Roman Dacia was the first phase of the Romanians' ethnogenesis.


title: Romania

text: The Carpians, Goths and other neighbouring tribes made regular raids against Dacia from the 210s. The Romans could not resist, and Emperor Aurelian ordered the evacuation of the province Dacia Trajana in 271. Scholars supporting the continuity theory are convinced that most Latin-speaking commoners stayed behind when the army and civil administration was withdrawn. The Romans did not abandon their fortresses along the northern banks of the Lower Danube for decades, and Dobruja (known as Scythia Minor) remained an integral part of the Roman Empire until the early 7th century.


title: Romania

text: The Goths were expanding towards the Lower Danube from the 230s, forcing the native peoples to flee to the Roman Empire or to accept their suzerainty. The Goths' rule ended abruptly when the Huns invaded their territory in 376, causing new waves of migrations. The Huns forced the remnants of the local population into submission, but their empire collapsed in 454. The Gepids took possession of the former Dacia province. The nomadic Avars defeated the Gepids and established a powerful empire around 570. The Bulgars, who also came from the Eurasian steppes, occupied the Lower Danube region in 680.


title: Romania

text: Place names that are of Slavic origin abound in Romania, indicating that a significant Slavic-speaking population lived in the territory. The first Slavic groups settled in Moldavia and Wallachia in the 6th century, in Transylvania around 600. After the Avar Khaganate collapsed in the 790s, Bulgaria became the dominant power of the region, occupying lands as far as the river Tisa. The Council of Preslav declared Old Church Slavonic the language of liturgy in the First Bulgarian Tsardom in 893. The Romanians also adopted Old Church Slavonic as their liturgical language.


title: Romania

text: The Magyars (Hungarians) took control of the steppes north of the Lower Danube in the 830s, but the Bulgarians and the Pechenegs jointly forced them to abandon this region for the lowlands along the Middle Danube around 894. Centuries later, the "Gesta Hungarorum" wrote of the invading Magyars' wars against three dukes—Glad, Menumorut and the Vlach Gelou—for Banat, Crișana and Transylvania. The "Gesta" also listed many peoples—Slavs, Bulgarians, Vlachs, Khazars, and Székelys—inhabiting the same regions. The reliability of the "Gesta" is debated. Some scholars regard it as a basically accurate account, others describe it as a literary work filled with invented details. The Pechenegs seized the lowlands abandoned by the Hungarians to the east of the Carpathians.


title: Romania

text: Byzantine missionaries proselytised in the lands east of the Tisa from the 940s and Byzantine troops occupied Dobruja in the 970s. The first king of Hungary, Stephen I, who supported Western European missionaries, defeated the local chieftains and established Roman Catholic bishoprics (office of a bishop) in Transylvania and Banat in the early 11th century. Significant Pecheneg groups fled to the Byzantine Empire in the 1040s; the Oghuz Turks followed them, and the nomadic Cumans became the dominant power of the steppes in the 1060s. Cooperation between the Cumans and the Vlachs against the Byzantine Empire is well documented from the end of the 11th century. Scholars who reject the Daco-Roman continuity theory say that the first Vlach groups left their Balkan homeland for the mountain pastures of the eastern and southern Carpathians in the 11th century, establishing the Romanians' presence in the lands to the north of the Lower Danube.


title: Romania

text: Exposed to nomadic incursions, Transylvania developed into an important border province of the Kingdom of Hungary. The Székelys—a community of free warriors—settled in central Transylvania around 1100 and moved to the easternmost regions around 1200. Colonists from the Holy Roman Empire—the Transylvanian Saxons' ancestors—came to the province in the 1150s. A high-ranking royal official, styled voivode, ruled the Transylvanian counties from the 1170s, but the Székely and Saxon seats (or districts) were not subject to the voivodes' authority. Royal charters wrote of the "Vlachs' land" in southern Transylvania in the early 13th century, indicating the existence of autonomous Romanian communities. Papal correspondence mentions the activities of Orthodox prelates among the Romanians in Muntenia in the 1230s. Also in the 13th century, during one of its greatest periods of expansion, the Republic of Genoa started establishing many colonies and commercial and military ports on the Black Sea, in the current territory of Romania. The largest Genoese colonies in present-day Romania were Calafat (still known as such), Constanța (Costanza), Galați (Caladda), Giurgiu (San Giorgio), Licostomo and Vicina (unknown modern location). These would last until the 15th century.


title: Romania

text: The Mongols destroyed large territories during their invasion of Eastern and Central Europe in 1241 and 1242. The Mongols' Golden Horde emerged as the dominant power of Eastern Europe, but Béla IV of Hungary's land grant to the Knights Hospitallers in Oltenia and Muntenia shows that the local Vlach rulers were subject to the king's authority in 1247. Basarab I of Wallachia united the Romanian polities between the southern Carpathians and the Lower Danube in the 1310s. He defeated the Hungarian royal army in the Battle of Posada and secured the independence of Wallachia in 1330. The second Romanian principality, Moldavia, achieved full autonomy during the reign of Bogdan I around 1360. A local dynasty ruled the Despotate of Dobruja in the second half of the 14th century, but the Ottoman Empire took possession of the territory after 1388.


title: Romania

text: Princes Mircea I and Vlad III of Wallachia, and Stephen III of Moldavia defended their countries' independence against the Ottomans. Most Wallachian and Moldavian princes paid a regular tribute to the Ottoman sultans from 1417 and 1456, respectively. A military commander of Romanian origin, John Hunyadi, organised the defence of the Kingdom of Hungary until his death in 1456. Increasing taxes outraged the Transylvanian peasants, and they rose up in an open rebellion in 1437, but the Hungarian nobles and the heads of the Saxon and Székely communities jointly suppressed their revolt. The formal alliance of the Hungarian, Saxon, and Székely leaders, known as the Union of the Three Nations, became an important element of the self-government of Transylvania. The Orthodox Romanian "knezes" ("chiefs") were excluded from the Union.


title: Romania

text: The Kingdom of Hungary collapsed, and the Ottomans occupied parts of Banat and Crișana in 1541. Transylvania and Maramureș, along with the rest of Banat and Crișana developed into a new state under Ottoman suzerainty, the Principality of Transylvania. Reformation spread and four denominations—Calvinism, Lutheranism, Unitarianism, and Roman Catholicism—were officially acknowledged in 1568. The Romanians' Orthodox faith remained only tolerated, although they made up more than one-third of the population, according to 17th-century estimations.


title: Romania

text: The princes of Transylvania, Wallachia, and Moldavia joined the Holy League against the Ottoman Empire in 1594. The Wallachian prince, Michael the Brave, united the three principalities under his rule in May 1600. The neighboring powers forced him to abdicate in September, but he became a symbol of the unification of the Romanian lands in the 19th century. Although the rulers of the three principalities continued to pay tribute to the Ottomans, the most talented princes—Gabriel Bethlen of Transylvania, Matei Basarab of Wallachia, and Vasile Lupu of Moldavia—strengthened their autonomy.


title: Romania

text: The united armies of the Holy League expelled the Ottoman troops from Central Europe between 1684 and 1699, and the Principality of Transylvania was integrated into the Habsburg monarchy. The Habsburgs supported the Catholic clergy and persuaded the Orthodox Romanian prelates to accept the union with the Roman Catholic Church in 1699. The Church Union strengthened the Romanian intellectuals' devotion to their Roman heritage. The Orthodox Church was restored in Transylvania only after Orthodox monks stirred up revolts in 1744 and 1759. The organization of the Transylvanian Military Frontier caused further disturbances, especially among the Székelys in 1764.


title: Romania

text: Princes Dimitrie Cantemir of Moldavia and Constantin Brâncoveanu of Wallachia concluded alliances with the Habsburg Monarchy and Russia against the Ottomans, but they were dethroned in 1711 and 1714, respectively. The sultans lost confidence in the native princes and appointed Orthodox merchants from the Phanar district of Istanbul to rule Moldova and Wallachia. The Phanariot princes pursued oppressive fiscal policies and dissolved the army. The neighboring powers took advantage of the situation: the Habsburg Monarchy annexed the northwestern part of Moldavia, or Bukovina, in 1775, and the Russian Empire seized the eastern half of Moldavia, or Bessarabia, in 1812.


title: Romania

text: A census revealed that the Romanians were more numerous than any other ethnic group in Transylvania in 1733, but legislation continued to use contemptuous adjectives (such as "tolerated" and "admitted") when referring to them. The Uniate bishop, Inocențiu Micu-Klein who demanded recognition of the Romanians as the fourth privileged nation was forced into exile. Uniate and Orthodox clerics and laymen jointly signed a plea for the Transylvanian Romanians' emancipation in 1791, but the monarch and the local authorities refused to grant their requests.


title: Romania

text: The Treaty of Küçük Kaynarca authorised the Russian ambassador in Istanbul to defend the autonomy of Moldavia and Wallachia (known as the Danubian Principalities) in 1774. Taking advantage of the Greek War of Independence, a Wallachian lesser nobleman, Tudor Vladimirescu, stirred up a revolt against the Ottomans in January 1821, but he was murdered in June by Phanariot Greeks. After a new Russo-Turkish War, the Treaty of Adrianople strengthened the autonomy of the Danubian Principalities in 1829, although it also acknowledged the sultan's right to confirm the election of the princes.


title: Romania

text: Mihail Kogălniceanu, Nicolae Bălcescu and other leaders of the 1848 revolutions in Moldavia and Wallachia demanded the emancipation of the peasants and the union of the two principalities, but Russian and Ottoman troops crushed their revolt. The Wallachian revolutionists were the first to adopt the blue, yellow and red tricolour as the national flag. In Transylvania, most Romanians supported the imperial government against the Hungarian revolutionaries after the Diet passed a law concerning the union of Transylvania and Hungary. Bishop Andrei Șaguna proposed the unification of the Romanians of the Habsburg Monarchy in a separate duchy, but the central government refused to change the internal borders.


title: Romania

text: The Treaty of Paris put the Danubian Principalities under the collective guardianship of the Great Powers in 1856. After special assemblies convoked in Moldavia and Wallachia urged the unification of the two principalities, the Great Powers did not prevent the election of Alexandru Ioan Cuza as their collective "domnitor" (or ruling prince) in January 1859. The united principalities officially adopted the name Romania on 21 February 1862. Cuza's government carried out a series of reforms, including the secularisation of the property of monasteries and agrarian reform, but a coalition of conservative and radical politicians forced him to abdicate in February 1866.


title: Romania

text: Cuza's successor, a German prince, Karl of Hohenzollern-Sigmaringen (or Carol I), was elected in May. The parliament adopted the first constitution of Romania in the same year. The Great Powers acknowledged Romania's full independence at the Congress of Berlin and Carol I was crowned king in 1881. The Congress also granted the Danube Delta and Dobruja to Romania. Although Romanian scholars strove for the unification of all Romanians into a Greater Romania, the government did not openly support their irredentist projects.


title: Romania

text: The Transylvanian Romanians and Saxons wanted to maintain the separate status of Transylvania in the Habsburg Monarchy, but the Austro-Hungarian Compromise brought about the union of the province with Hungary in 1867. Ethnic Romanian politicians sharply opposed the Hungarian government's attempts to transform Hungary into a national state, especially the laws prescribing the obligatory teaching of Hungarian. Leaders of the Romanian National Party proposed the federalisation of Austria-Hungary and the Romanian intellectuals established a cultural association to promote the use of Romanian.


title: Romania

text: Fearing Russian expansionism, Romania secretly joined the Triple Alliance of Germany, Austria-Hungary, and Italy in 1883, but public opinion remained hostile to Austria-Hungary. Romania seized Southern Dobruja from Bulgaria in the Second Balkan War in 1913. German and Austrian-Hungarian diplomacy supported Bulgaria during the war, bringing about a rapprochement between Romania and the Triple Entente of France, Russia and the United Kingdom. The country remained neutral when World War I broke out in 1914, but Prime Minister Ion I. C. Brătianu started negotiations with the Entente Powers. After they promised Austrian-Hungarian territories with a majority of ethnic Romanian population to Romania in the Treaty of Bucharest, Romania entered the war against the Central Powers in 1916. The German and Austrian-Hungarian troops defeated the Romanian army and occupied three-quarters of the country by early 1917. After the October Revolution turned Russia from an ally into an enemy, Romania was forced to sign a harsh peace treaty with the Central Powers in May 1918, but the collapse of Russia also enabled the union of Bessarabia with Romania. King Ferdinand again mobilised the Romanian army on behalf of the Entente Powers a day before Germany capitulated on 11 November 1918.


title: Romania

text: Austria-Hungary quickly disintegrated after the war. The General Congress of Bukovina proclaimed the union of the province with Romania on 28 November 1918, and the Grand National Assembly proclaimed the union of Transylvania, Banat, Crișana and Maramureș with the kingdom on 1 December. Peace treaties with Austria, Bulgaria and Hungary delineated the new borders in 1919 and 1920, but the Soviet Union did not acknowledge the loss of Bessarabia. Romania achieved its greatest territorial extent, expanding from the pre-war . A new electoral system granted voting rights to all adult male citizens, and a series of radical agrarian reforms transformed the country into a "nation of small landowners" between 1918 and 1921. Gender equality as a principle was enacted, but women could not vote or be candidates. Calypso Botez established the National Council of Romanian Women to promote feminist ideas. Romania was a multiethnic country, with ethnic minorities making up about 30% of the population, but the new constitution declared it a unitary national state in 1923. Although minorities could establish their own schools, Romanian language, history and geography could only be taught in Romanian.


title: Romania

text: Agriculture remained the principal sector of economy, but several branches of industry—especially the production of coal, oil, metals, synthetic rubber, explosives and cosmetics—developed during the interwar period. With oil production of 5.8 million tons in 1930, Romania ranked sixth in the world. Two parties, the National Liberal Party and the National Peasants' Party, dominated political life, but the Great Depression in Romania brought about significant changes in the 1930s. The democratic parties were squeezed between conflicts with the fascist and anti-Semitic Iron Guard and the authoritarian tendencies of King Carol II. The King promulgated a new constitution and dissolved the political parties in 1938, replacing the parliamentary system with a royal dictatorship.