Why did America enter the war in Vietnam? Why did America get involved in thewar?

A) America was trying to contain communism. It did not want communism to
spread to South Vietnam

B) America was responsible for the war starting and felt they should finish the war

C) American manufacturing had taken a hit by so many jobs being outsourced, so.America felt it needed to protect Vietnam

D) America was interested in keeping its business ties to Asia and wanted to preserve trade