World War 2
Japan in WW2
Hiroshima and Nagasaki Atomic Bombings

How much did the scientists and other people involved with the creation of the atom bomb know about the effects it would cause before the bombs were actually dropped?

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July 15, 2015 8:07PM

They knew almost everything. In order to make the bomb they had extensive knowledge about how the atom works and the results of radiation on people and animals. They knew what they were doing, then left it to the politicians to decide.