The answer is A. Americans have had a historic fear of communism, as well other ideologies such as anarchism or any different mindset that was against the set status of quo. Before World War I, many immigrants came into the United States from various parts of southern and eastern Europe. Since they were not like the previous norm of western and northern Europeans, they were judged differently upon entry. They were stereotyped as having different political agendas then the typical American, with Communism being one such example as it preached of a classless system that terrified those in business and power. The Russian Revolution changed the political system of Russia from Tsardom to that of Communism, and this made America fear of a worldwide Communist revolution.