America's intervention in VietNam could be compared to America's intervention in Korea. Though many people criticize both South VietNam and South Korea as being puppet states of the US, they certainly weren't and only had the US as an extra hand for help. South VietNam during its prime was one of the best countries in Asia. What stopped its growth is the Communist rule that eventually made the economy plummet into a massive depression.
I believe that the United States of America should no have entered the war because, there was no actual reason for them to enter the war. So what if other counties become communist? I think if it is not our country becoming communist why is it a problem. Also they did kill thousands of civilians from them entering the war. The war was originally against north and south Vietnam neither of them had a problem with the united states of America.