What did the Einstein-Szilard letter warn President Roosevelt about in 1939?
Athat the US was secretly researching nuclear weapons
Bthat Germany was researching nuclear weapons
Cthat the US planned to use nuclear weapons against Japan
Dthat Germany planned to use nuclear weapons against Japan
Athat the US was secretly researching nuclear weapons
Bthat Germany was researching nuclear weapons
Cthat the US planned to use nuclear weapons against Japan
Dthat Germany planned to use nuclear weapons against Japan