The correct option is C Ideological differences
Ideological differences were one basic cause of the Cold War between the United States and the U.S.S.R. after World War II. The United States political system is based on democracy, capitalism, and the importance of the individual. Both the United States and the U.S.S.R. supported self-determination in Africa to end Western imperialism. They disagreed on which form of government they would follow. Soviet support of Fidel Castro began in the 1950s. Rivalry in Asia existed among the United States, Soviet Union, and China. The United States support of dissidents within the Soviet Union was an ideological outgrowth of a difference between communism and democracy.