Question

why did Albert Einstein warned America about​

Answer 1

Einstein sent two more letters to Roosevelt, on March 7, 1940, and April 25, 1940, calling for action on nuclear research. Szilárd drafted a fourth letter for Einstein's signature that urged the President to meet with Szilárd to discuss policy on nuclear energy.

Answer 2

Answer:

he warned america about the consequences of the nuclear bombs developed by them