Answered

What did the Einstein-Szilard letter warn President Roosevelt about in 1939?
a. that the US was secretly researching nuclear weapons
b. that Germany was researching nuclear weapons
c. that the US planned to use nuclear weapons against Japan
d. that Germany planned to use nuclear weapons against Japan



Answer :

"b. that Germany was researching nuclear weapons" is the best answer from the list of options, but it should be noted that the letter was more of warning that nuclear bombs were a possibility.
Greenleafable
The correct answer is b. that Germany was researching nuclear weapons

The letter explained how Germany was working on a nuclear program and it urged the United States to also start working on one to prevent Germany from using it. This is one of the reason why when the US joined the war they started saving scientists from Nazis and sending them to the United States and using their knowledge.

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