In January 1973, two months after the signing of the Vietnam peace agreement, the last U.S. combat troops left South Vietnam as Hanoi frees many of the remaining prisoners of war.
The U.S. is a country of 50 states that covers a vast of North America. It is the world's fourth-largest country by land area.
In 1973, Two months after the signing of the Vietnam Peace Agreement, America's direct eight-year intervention in the Vietnam war.
On April 30, 1975 Americans still in South Vietnam were airlifted out of the country as Saigon fell to communist forces. The Vietnam war was the longest and most unpopular foreign war in the U.S.
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