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President Roosevelt approves production of the atomic bomb
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Brigadier General Leslie R. Groves selects Los Alamos, New Mexico, as site for separate scientific laboratory to design an atomic bomb.
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President Roosevelt dies, in turn Truman takes over the presidency. -
Germany surrenders from the war on this day.
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The uranium bomb, called Little Boy, is dropped on Hiroshima, Japan on this day. -
Nagasaki was bombed three days later resulting in a surrendering Japan within the following five days.
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The Soviet Union detonates its first atomic device on this day.
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Eisenhower is inaugurated on this day.
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