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The nuclear arms race was an arms race competition for supremacy in nuclear warfare between the United States, the Soviet Union, and their respective allies during the Cold War.
WW1 was the first war that was truly global, for the war that started in Europe also affected nation's in the Asias as well as the Americas. With the subcontinent and a whole different continent combined, and with most of the world's country in the war, it can be described as the world's first world war.
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Answer:
The Cold War
This idea shaped American foreign policy for decades. It shaped domestic policy as well. Many people in the United States worried that communists, or “subversives,” could destroy American society from the inside as well as from the outside.
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