Answer:
On August 2, 1939, Albert Einstein sent a letter to President Roosevelt warning him of the certain possibility that the Nazi regime in Germany was developing the necessary technology to create weapons of mass destruction, specifically, high impact nuclear bombs. In addition, in this letter Einstein urged the president to develop the same type of technology, in order to counter the eventual fire power that Germany could reach if it achieved its objective.
The Civilian Conservation Corps (CCC)
For Italy, they were spies who collected top secret knowledge for the Allied Powers. They were U.S. soldiers who fought off the enemy successfully. They were British troops leaving their units to join the enemy.
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The Depression of 1920-1921 resulted in a sharp increase in the tariff rates. The correct option among all the options that are given in the question is the last option or the fourth option. It was a big deflationary recession that happened in the United States of America. I hope the answer has helped you.