query: What is the cause of World War 2?
passage: Causes of World War II
Among the causes of World War II were Italian fascism in the 1920s, Japanese militarism and invasion of China in the 1930s, and especially the political takeover in 1933 of Germany by Adolf Hitler and his Nazi Party and its aggressive foreign policy. The immediate cause was Germany invading Poland on September 1, 1939, and Britain and France declaring war on Germany on September 3, 1939.
passage: Albert Park (North) Air Raid Shelter
On 7 December 1941, the United States of America entered World War Two following the bombing of the American fleet at Pearl Harbor in Hawaii by Japanese carrier-borne aircraft. England and its Commonwealth had been at war with Germany since September 1939, but now the war was truly global. The Japanese first bombed Darwin on 19 February 1942 and 14,000 Australians were taken prisoner following the fall of Singapore. Plans to defend Australia from an anticipated Japanese invasion and to use Queensland as a support base for the conduct of the Pacific war were implemented quickly. Australian and American personnel poured into Queensland and urgently required a wide range of new buildings and facilities. The population of Brisbane swelled dramatically. As it was the major city in Queensland, and the most northerly major population centre in Australia, military planning headquarters were set up in Brisbane, as were a number of important maintenance, communication, and supply facilities. General Douglas MacArthur, Commander in Chief of the Allied Forces, Southwest Pacific, was based in the AMP building at the corner of Queen Street and Edward Street in Brisbane, and General Sir Thomas Blamey, Commander in Chief of the Australian Forces, used the recently constructed University of Queensland buildings at St Lucia. Brisbane was obviously a strategic target for bombing, and rapid action had to be taken to protect the population in the event of air raids.