The US, Australia, South Korea, South Vietnam, Thailand, and the Phillippines had troops in Vietnam. The Soviet Union and Communist China (called Red China at the time) supplied war material to North Vietnam in the form of: Infantry weapons, tanks, trucks, helicopters, jet fighter aircraft, patrol boats, medical supplies, and the most deadly weapon of all, the Surface to Air Missiles (SAM's).
The US and North Vietnam .
The fight against the spread of Communism.
The Soviet Union (USSR) supplied North Vietnam, and the US fought for South Vietnam.
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.
North Vietnam /VC vs US, AUS, NZ, PI, ROK, RVN, and Thailand.
The US asked for their help.
The Korean War 1950-1953, WWII 1941(1939)-1945, WWI (1914-1918) had far more countries involved than did the Vietnam War. The few countries that helped the US (Australia, New Zealand, Philippines, Thailand, South Korea, and the host country of South Vietnam) did so because we asked for their help.
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.
to keep indochina from going communist. It was part of the domino theory
korea, united states, ussr, vietnam, and germany?
France,United states of america,and vietnam no other countries because noone knew about it exept france and the U.S.A