The Manhattan Project used the cyclotron, to help create the atomic bomb. The Manhatton Project took advantage of the nuclear invention, to get revenge upon the japanise for the bombing upon pearl harbor.
ultimately it was Truman's.
The U.S.A Manhattan Project created the Atomic Bomb for use against Japan. When it was used in WW2 Japan surrendered.
It was the development of the Atomic bomb and its use and policy
When the atomic bomb was finished, Leo Szilard, a scientist in on the Manhattan Project (the Manhattan Project was the code name for the project to build and develop the atomic bomb), made a petition urging the President not to resort the use of atomic bombs in the war unless the news of the bomb had been made open in public and on terms that Japan knows and refuses to surrender. The petition was signed by over 150 scientists in on the project. A counterpetition garners only two signatures. Japan, of course, refused to surrender. The result was the flattening of two major cities in Japan.
The atomic bomb project began during World War II, driven by fears that Nazi Germany was developing nuclear weapons. In 1938, the discovery of nuclear fission by German scientists prompted concerns about the possibility of a powerful bomb. This led to the U.S. government initiating the Manhattan Project in 1942, a secret program to research and develop atomic weapons. The project culminated in the successful detonation of the first atomic bomb in July 1945 in New Mexico, followed by its use against Japan in August 1945.
The atomic age was born in the US with the Manhatton project; but matured in Japan, with it's use on Hiroshima and Nagasaki. The cold war is the result of nuclear weapons. Japan is the birthplace of the cold war.
It was clearly ignored.
It was president Franklin D. Roosevelt who order the development of the atomic bomb. It was Harry S. Truman who order its use on Japan during World War II.
Franklin Roosevelt- but he died before the atomic bomb was used. Harry Truman was the next president, and ordered the use of the atomic bomb.
the atomic bomb
President Franklin D. Roosevelt authorized the development of the atomic bomb, but Harry Truman was President at the time of the bomb's first successful test, and he is the one who authorized its use in populated areas. The Manhattan Project, the development of the atomic bomb, was such a secret that even Vice President Truman didn't know about it until after he became President. (I don't know whether or not Vice President Wallace knew about the project.)
One thing that was not a major factor in the decision to use the atomic bomb was civilian casualties.