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Well for one, there was the idea that Communism was a direct threat to Democracy itself. That the rise of Communism would be the downfall of Democracy. As well, there was the fear that Communist countries would align with each other, the threat of nuclear war was already a huge scare and as such an alliance would have been seen as a threat to the US.
A. Georgetown University Press. Giving the name of an institution gives credibility to the publisher in the sense that it links said publisher with a place that may be reputable, providing weight to its name and ways to confirm whether the information published is factual or not.