North Vietnam, and southern communist guerillas living in South Vietnam (Viet Cong), (supported by the Soviet Union and Red China); verses the US, Australia, New Zealand, Philippines, Thailand, South Korea, and South Vietnam.
The countries invovled in the Vietnam War were:
* USA * Australia * New Zealand
These three countries formed a treaty called the SEATO which stood for South East Asia treaty organisation. Basically protected each other from invasion from communist countries.
The Soviet Union (USSR) supplied North Vietnam, and the US fought for South Vietnam.
The fight against the spread of Communism.
The countries that were actually "physically" involved, and were bombed or had US aircraft crash into them, whether they were "officially" in the war or not, were: Lao's, Cambodia, North Vietnam and South Vietnam.
Nobody knows. Too bad.
The United States did get involved in the Vietnam war because of communism in Vietnam.
North Vietnam and South Vietnam. Also, to name just a few: the USA, China, Russia, South Korea, Australia, France, and England. A great many countries fought in the Vietnam War from 1945 to 1975.
korea, united states, ussr, vietnam, and germany?
The north won the war. No need for agreements.
Primary combatants were US & North Vietnam; especially the air war over the North.
The UK was not involved in the Vietnam war - it was the USA!
They weren't.
No, only a couple of Asian countries contributed to WW1 but Vietnam wasn't one of them. The only countries that did participate were colonies of the European countries which were involved.