For about 30 years from around 1950 the American government believed communism was so liable to spread that their only option for maintaining a capitalist world hegemony was direct intervention in communist countries and countries with strong communist movements. See: domino theory. They even worried about it domestically which was part of the motivation for McCarthyism.
For about 30 years from around 1950 the American government believed communism was so liable to spread that their only option for maintaining a capitalist world hegemony was direct intervention in communist countries and countries with strong communist movements. See: domino theory. They even worried about it domestically which was part of the motivation for McCarthyism.