Question

what did he write a letter to the president of America
"A truly beautiful mind"​

Answer 1

Answer:  Einstein wrote a a letter to Franklin D Roosevelt ,the American president and warned him that a single nuclear bomb would make a mass destruction. ... It was the fact that the Nazis had the ability to develop the atomic bomb. It could destroy the whole world. So he warned Franklin D Roosevelt in his letter.

....

.....

......

plz plz plz mark my answer as the brainliest answer.

Answer 2

Einstein wrote a letter to the American President, Franklin D. Roosevelt on 2 August 1939 in which he tried to warn the American President about the effects of this bomb and also wanted them to make other bomb that could utilize it's potential of destruction.

According to Einstein, bombing of Hiroshima and Nagasaki was unnecessary. Einstein played an important role in the making of atomic bomb but the Americans developed the atomic bomb in a secret project of their own and dropped it on these two Japanese cities. He was later depressed and felt guilty by the extent of destruction. He also wrote a long letter for the formation of World Government in order to stop the destruction caused by the nuclear weapons.