Distinctive rock sequences on south america terminate at the atlantic ocean but reappear on the continent of Africa.
This is evidence towards the theory of Plate tectonics and the existence of Pangaea.
The Truman doctrine and NATO were United States responses to the communist threat after WWII.
Answer & Explanation:
The country's economic woes were made worse by the fact that the central government also lacked the power to impose tariffs on foreign imports or regulate interstate commerce. Thus, it couldn't protect American producers from foreign competitors
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.
