Later on, more liberal government policies were put into place; daimyo and officials were encouraged to take more ronin into their service as samurai. However, this option only could serve a minority of ronin; in an era of peace, few clans needed the large number of samurai that they would need in times of war.
The atomic bomb was not invented by any country, it was  invented in 1933 by Leo Szilard (he was in London at the time, so  when he patented the invention he sold it to the â¦ British Admiralty  who classified it to keep the idea away from the Nazis).
In response to developments in Germany, president Franklin Roosevelt ordered the creation of an atomic weapon. Dubbed the Manhattan Project, this secret endeavor brought together scientists and engineers in a $2 billion effort that led to the creation of two atomic weapons and ushered in the nuclear age.ntroduction. The events surrounding the invention and use of two atomic weapons by the United States on Japan during WWII are among the most controversial and significant developments in modern American history. For this reason, the topic provides a superb lesson for exploring the role of technology in society.