In the late 1950s, the United States supported Vietnamese President Ngo Dihn Diem who was Catholic.
Answer: Option B
Step-by-step explanation:
President Ngo Dihn Diem was the final Prime Minister state of Vietnam. He then became the President of Vietnam in the year 1955 of South Vietnam. He was the president till he got assassinated in 1963 in a military coup.
He was born in a family which strongly supported the catholic religion and he him self was also a strong supported of catholism. Thus he was supported by the other catholic people also which helped him to come into power.