It was Goerge Washington.
He was the Army-General.
Mesopotamia--this early civilization traces connections to trade as early as 2300 BC connecting to Egypt and the Indus Valley.
Through trade, ideas and collective learning occurred spreading to these Bronze Age civilizations. Eventually this spread to more growing civilizations to the north (Greece) and east (Persia).
Answer:
I think the letter was about the first atomic bomb.
Explanation:
''The Einstein–Szilárd letter was a letter written by Leó Szilárd and signed by Albert Einstein that was sent to the United States President Franklin D. Roosevelt on August 2, 1939. ... It prompted action by Roosevelt, which eventually resulted in the Manhattan Project developing the first atomic bombs.''
got the explanation from wikipedia, hope this helps.
