The main cause of the Vietnam War was that communism was threatening to expand all over South East Asia.
Your information is incomplete as the excerpts aren't given. Therefore, an overview will be given.
It should be noted that the Vietnam War was a conflict between North Ana South Vietnam.
Also, the main cause of the Vietnam War was that communism was threatening to expand all over South East Asia.
Learn more about Vietnam War on:
https://brainly.com/question/182779
