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Albert Einstein writes to FDR in August that Nazi Germany is working on a bomb of enormous potential and danger to the United States. The Nazi project is called the Uranium Club.
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Following the knowledge that Nazi Germany is working on the bomb, the United States creates the Manhattan Project under Robert Oppenheimer to develop the world's first nuclear bomb.
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With the death of President Rooseveldt, Harry Truman becomes President of the United States. He becomes informed of the bomb and ponders using it to end the Japanese war.
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The Manhattan Project successfully detonates the world's first nuclear bomb, paving the way for other bombs to be used in the War.
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The United States successfully detonates a nuclear bomb on Hiroshima, Japan, killing tens of thousands of people.
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The United States deploys a second nuclear bomb on Japan, effectively ending the war and forcing the Japanese to surrender.
