D) All of the above. McCarthyism was successful during the red scare because Americans were fearful of the Cold War, the idea of Communism, and the Soviet Union dominating the United States. People that were even accused of being a communist were put in unfair trials and sent to prison.
McCarthyism was successful because Americans feared a. the Cold War. c. Communism. b. Soviet domination. d. all of the above.