The correct answers are A) He was afraid that Diem's defeat would cause communism to spread to other parts of Asia. and C) he did not want Chi Minh, a communist, to gain control of South Vietnam.
The two reasons why US president Dwight Eisenhower provided full support to the leader Ngo Dinh Diem in South Vietnam were the following: He was afraid that Diem's defeat would cause communism to spread to other parts of Asia. and he did not want Chi Minh, a communist, to gain control of South Vietnam.
President Eisenhower avoided direct military intervention in Vietnam but was worried that Vietnam could become a Communist country that supported the Soviet Union. President Eisenhower decided to better support France army with supplies and money to fight Communism in Vietnam. Eisenhower also invested a lot of money in helping South Vietnam.