Answer:
A. True.
Step-by-step explanation:
While the United States and the Soviet Union were once allies against the Nazis during the Second World War, many people in America were highly wary of the spread of communism. the strains of the Cold War have deepened the insecurity in the U.S and some politicians took its advantage to undermine the political rivals by claiming them to communist sympathizers. When the right-wing Republican Senator Joe McCarthy's anti-communist crusade initiated a series of widely circulated investigations of the suspected Communist infiltration, it becomes a major threat democracy and freedom of expression throughout the 1960s.