Because the Vietcong were fighting on their home terrain and also were able to employ very sophisticated guerilla tactics which negatively affected the morale and desire of American soldiers to even fight there in the first place.
Two of the major reasons why the Vietcong was so successful against the United States was because they practiced "guerrilla warfare," which allowed them to constantly ambush US forces--and because they were being supplied with weapons from China and Russia.
Yes, I believe that we need to have political parties in United States because the people can choose between who they want to vote for and everybody doesn’t have to have the same opinion for people can I have their own, and can act on it.
