A. To contain Communism
Nixon's support of the military dictatorship in Chile, particularly during the coup that overthrew President Salvador Allende in 1973, was primarily driven by the desire to contain the spread of communism in Latin America. The U.S. government viewed Allende's socialist policies as a threat, and the Nixon administration believed that supporting the military coup was necessary to halt the perceived communist influence in the region. While factors like repression and free markets played roles in the broader context, the main rationale was anti-communism.