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.
The Vietnam War (also known as Second Indochina War or American War in Southeast Asia) lasted from 1955 to 1975. It was fought between North Vietnam and South Vietnam.orth Vietnam was supported by the USSR, China and North Korea, while South Vietnam was supported by the United States with its allies, Thailand, Australia, New Zealand, and the Philippines.