How long did the Vietnam war last?
Vietnam War started on November 1, 1955 and lasted until April 30, 1975, which is roughly 20 years.
Who won the war?
North Vietnamese won the war with the USSR backing them.
How many lives were lost?
There was approximately about 1,400,000 deaths all in total over the 20 years of fighting in Vietnam, this included civilians on both sides.