Why did the United States choose to fight communism abroad?

Explust as the U.S. government feared the possibility of Communist infiltration of the United States, so too was it alert for signs that Communist forces were on the move elsewhere. The Soviet Union had been granted control of the northern half of the Korean peninsula at the end of World War II, and the United States had control of the southern portion. The Soviets displayed little interest in extending its power into South Korea,anation:

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a. the astrolabe could determine the correct latitudinal location of the ship