Who won the Vietnam war?

The USA won the Vietnam war.

Explanation:

Those only familiar with the U.S. role in Vietnam tend to think in binary terms. Either the U.S. won or Vietnam won. There is only one of two answers. However, the question is not binary. Moreover, the Vietnamese don't perceive just one war. "The Vietnam War" covers a much longer period of time in the country of Vietnam. It was a long struggle for independence. For the Vietnamese, the conflict spanned almost one hundred years. During that time, the Vietnamese attempted to expel foreigners from their country and rule it themselves.

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