Respuesta :
First option - south Vietnam relied on the assistance of the United States in resisting communism.
South Vietnam relied on the United States' support in combating communist, nationalism was present in Vietnam. So, option (i) or (a) is the correct answer.
What is Vietnamese Nationalism?
In 1949, China became a communist country, and communists ruled North Vietnam. The United States was concerned that communism might spread from South Vietnam to the rest of Asia.
It opted to assist the South Vietnamese government by sending money, supplies, and military advisers.
For the information about Vietnam-war nationalism, refer below
https://brainly.com/question/1334426
