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Why build a bomb?. Albert Einstein wrote to President Franklin D. Roosevelt on August 2, 1939. Einstein and several other scientists explained that Nazi Germany was working on a way to purify uranium-235, which could be used to build an atomic bomb. The Manhattan Project began shortly after this l
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1. Development & Use of the Atomic Bomb during WWII
2. Why build a bomb? Albert Einstein wrote to President Franklin D. Roosevelt on August 2, 1939.
Einstein and several other scientists explained that Nazi Germany was working on a way to purify uranium-235, which could be used to build an atomic bomb.
The Manhattan Project began shortly after this letter.