posted by michelle .
i am not good with history and i have an assignment on how the united states became involved with the politics in southeast Asia and how it affected the politics in the united sates. If anybody can help me it would be greatly appreciated
First, your School Subject is History.
The short answer to your question is that the U.S. was afraid the Communists would take over Vietnam. We entered their civil war (which we call the Vietnam War) at the request of South Vietnam to fight the Communists of North Vietnam.
As the war wore on with no signs of our victory, many Americans wondered why we were interfering in that part of the world and opposed the war.
For more details, check this article.