What led to the beginning of serious involvement of the United States in South Vietnam?
A. The victory of the Vietminh at Dien Bien Phu
B. The dictatorship of Ngo Dinh Diem
C. The division of Vietnam at the 17th parallel
D. The success of the Ho Chi Minh Trail in transporting supplies from North to South Vietnam
Answer:C
What led to the beginning of serious involvement of the United States in South Vietnam?
A. The victory of the Vietminh at Dien Bien Phu B. The dictatorship of Ngo Dinh Diem C. The division of Vietnam at the 17th parallel D. The success of the Ho Chi Minh Trail in transporting supplies from North to South Vietnam