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The Japanese bombed Pearl Harbor causing the United States to go into World War II
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Robber Oppenheimer is appointed director of the Manhattan Project. This project was to secretly build and test the atomic bomb
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The first atomic bomb is detonated by the United States at the Trinity test site in the desert of New Mexico
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President Harry S. Truman issues the Potsdam Proclamation to Japan demanding them to surrender
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The first atomic bomb, Little Boy, is dropped on Hiroshima, Japan, and killed about 80,000 people instantly
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The second bomb, Fat Man, is dropped over Nagasaki, Japan and is estimated to have kille about 75,000 people
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President Harry S. Truman speaks to the nation in a radio address about the the first bomb that blew up in Hiroshima and the second bomb that just had blown up in Nagasaki
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On this day Japan surrenders, ending World War II