What factor contributed most to the unpopularity of the Vietnam War in the United States?

The factor that contributed the most to the unpopularity of the Vietnam War in the United States was the losses both sides suffered.

Explanation:

The reason behind this answer is that in this stage of time the young population of the united states was fighting to break the rule of behavior the older generation wanted to pass on them. They wanted love and peace for everything. They fought inequality in the U.S. but they also fought against global problems in the U.S. they also fought to stop the Vietnam war because even though the U.S. was at the cold war with the Soviet Union. Vietnam was the only communist country that followed that form of government. They didn't attack the U.S. or act against them. The U.S. intervened because they wanted to stop the spread of communism. Also, both sides lost too many people or power.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

because its important to learn about other countries and how high tech they are compared to us. also its good to learn about other cultures and how ours differs and in common also we need to learn about companies that we still buy since they ship it here.