Answer:
The statement is true. Ngo Dinh Diem was the leader of South Vietnam who prevented the first free election after independence to prevent the reunification of North and South Vietnam.
Step-by-step explanation:
Ngo Dinh Diem was a Vietnamese politician and a central figure at the beginning of the Vietnam War. He is remembered for his role in establishing the Republic of Vietnam (South Vietnam) and was its first president (1955-1963).
Diem maintained a lot of support from the United States at the beginning of his government. However, his relations with the United States deteriorated, and Ngo Dinh Diem showed growing distrust and rejected an increase in the military participation of the United States in Vietnam.
On November 1, 1963, a coup d'etat overthrew his regime, and the next day he was killed along with his younger brother by the Chief of Staff of the Army of the Republic of Vietnam, General Duong Van Minh.