What was the reason the United States was drawn into a war in Vietnam?

Question

The United states wanted to compete with China for trade in the region.
The United states was trying to stop European colonialism in the region.
The United states wanted to prevent the spread of communism in the region.

Answer 1

The United States was drawn into the war in Vietnam primarily because they wanted to prevent the spread of communism in the region. The US feared that if South Vietnam fell to communism, it would lead to a domino effect in Southeast Asia, ultimately threatening the security and interests of the United States and its allies. This fear was fueled by the Cold War rivalry between the US and the Soviet Union, leading to the US providing military and financial support to South Vietnam in their fight against the communist North Vietnamese forces.