What major countries where involed in the Vietnam war?

Answer 1

Well, theoretically it was just Vietnam and the Americans, although the Americans took over the job from the French who discovered pretty quickly that it was a war they wanted no part of. But, somebody was quietly backing the North Vietnamese, and that somebody was China.

Answer 2

North Vietnam fought alone (with the exception of Southern Vietnamese guerrillas called the Viet Cong); which was part of their "strategy"...gaining world sympathy (which worked by the way). The North was supported by Red China/USSR with war equipment (MiG-17, MiG-19, and MiG-21 jet fighters and PT76 and T54/55 medium tanks, missiles, etc.). Red China supplied all of the MiG-19 (J6 versions) and most of the MiG-17s. The Soviets supplied all of the MiG-21s.

US/Allied Forces: US, Australia, New Zealand, Thailand, Philippines, S. Korea, and S. Vietnam. Australia entered the war with their Centurion tanks, the only allied nation to supply their own armor.

Answer 3

North Vietnam and South Vietnam