The Ozone layer, which mostly lies on the lower portion of the stratosphere.
How Long Did The Vietnam War Last. The Vietnam War is the longest war ever to have taken place in the American history. It lasted for 16 years and it was terrible for the Americans at that time as the Civil Rights campaign was at its peak and so also the Vietnam War and anti war protests.
Engaged in a war that many viewed as having no way to win, U.S. leaders lost the American public's support for the war. Since the end of the war, the Vietnam War has become a benchmark for what not to do in all future U.S. foreign conflicts. Dates of the Vietnam War: 1959 -- April 30, 1975.