Why did the United States support a change in South Vietnamese leadership?
A The United States thought that Ngo Dinh Diem had become a
communist.
B The United States believed that Ngo Dinh Diem should hold free and
fair elections.
C The United States believed that Ngo Dinh Diem did not support
American Special Forces.
D The United States saw that Ngo Dinh Diem was alienating South
Vietnamese citizens.