The UN stayed out of it.
how come the united states did not invade north vietnam to end the war
NVA tanks parked on their nation's capital front lawn.
VN was one nation.
No. Congress never actually declared war. It is officially a CONFLICT, bu if you ask someone who was there, it was a war.
The Vietnam War was the only time that the communists defeated an American supported free nation (South Vietnam).
North Vietnam conquered South Vietnam; the Republic of South Vietnam disappeared. and the united country of just one Vietnam was created as a communist nation.
South Vietnam
how come the united states did not invade north vietnam to end the war
With the exception of the United Kingdom, every one of the five permanent United Nations Security Council members was involved in Vietnam. France fought an anti-colonial revolution from the end of World War II until 1954 called the First Indochina War. The United States was tangentially involved in the First Indochina War and actively promoted the creation of South Vietnam, which was targeted for annexation by USSR client-state North Vietnam. When the USSR supported North Vietnam attacked South Vietnam in the Second Indochina War (called the Vietnam War in the USA), P.R. China joined North Vietnam in providing supplies and troops.
The nation of Vietnam came into existence in 1975 (on paper in 1976). So are you asking about that Vietnam or the Vietnam War? There was no nation called "Vietnam" during the Vietnam War.
NVA tanks parked on their nation's capital front lawn.
The League of Nations was formed at the end of World War One, the United Nations was formed at the end of World War II.
When the Vietnam War ended in 1975, North and South Vietnam became one communist nation called Vietnam.
The United States discontinued the draft at the end of the Vietnam War.
Only one nation was ultimately effected permanently: The Republic of South Vietnam disappeared! There is no such country today.
VN was one nation.
The United States didn't fight against South Vietnam in fact they were allies fighting against North Vietnam.