See answer below.
The French Indochina War most likely led to the (so called) American Vietnam War. Because the French war divided up the country into TWO nations; North & South Vietnams. When the communist led North Vietnam attempted to take over (conquer) South Vietnam... this led to US involvment.
Communist infiltration into South Vietnam.
North Vietnam defeated the South (or the North conquered the South).
There no longer is a North Vietnam, North Vietnam and South Vietnam were joined together after the Vietnam War.
South Vietnam's surrender to North Vietnam is what ended the Vietnam War. The North Vietnamese had the goal of Vietnamese Unification and the surrender of South Vietnam in 1975 allowed them to achieve that objective.
Air war over North Vietnam. Ground war in South Vietnam; Riverine war in South Vietnam.
Then in North and South Vietnam.
Air war-North Vietnam Ground war-South Vietnam
The North invaded the South and defeated them (conquered them).
North Vietnam=Air War South Vietnam=Ground & Riverine War
The Korean War was a United Nations force supporting South Korea against a North Korean-Chinese invasion. The Vietnam War was a US-led coalition supporting South Vietnam against a North Vietnam invasion supported by China and Russia.