NVA tanks crashed thru their gates and accepted their surrender on 30 April 1975.
North Vietnam and South Vietnam. South Vietnam was a democratic republic and North Vietnam had a socialist government headed by a communist regime. North Vietnam was trying to defeat the democracy of South Vietnam and unify the country.
Vietnam and Laos. North Korea and China are also communist but are not in South-East Asia.
The US was an ally of South Vietnam; it was up to South Vietnam to repel the invasion from the north, with massive military assistance from the US (which, of course, ultimately failed).
North Vietnamese won the Vietnam War, and it is the year 1975, not 1990, that they militarily defeat South Vietnam.
America fought against North Vietnam, in an unsuccessful attempt to defeat its invasion and conquest of South Vietnam.
Communist NORTH Vietnam wanted to re-unite with it's SOUTHERN half; SOUTH Vietnam. The US backed South Vietnam desired to remain a non-communist Republic of South Vietnam. Because the "Communists" were involved, and this was the cold war era; the US had to stop & contain communism. The North attacked the South, the South resisted...Vietnam War.
The US supported resistance to communism, so it backed the faction in the South, while Russia and China backed the faction in the North. The same had occurred earlier with North and South Korea. South Vietnam became a nominal democracy but an unpopular authoritarian regime, and after the US withdrew its aid, it was overrun by the forces of North Vietnam in 1975.
The French .
This is the main one- South Vietnam and its supporters were not sufficient enough to defeat Communist North Vietnam, who had the help of China and other Communist countries. So the South was defeated, the North took over the South and combined South and North into one country, Vietnam. Due to the whole country becoming Communist many South Viets fled the country as refugees.
1. The US didn't defeat N. Vietnam. 2. The "ONLY" weapon feared by North Vietnam (and the NVA in South Vietnam) was the B-52 Stratofortress heavy bomber (Strategic Air Command).
The Viet Cong (VC) were communists living in South Vietnam. Later, the regular army units of North Vietnam would enter the fight (NVA). Diem was the first president of South Vietnam in 1955. He was assassinated in 1963.
The US supported resistance to communism, so it backed the faction in the South, while Russia and China backed the faction in the North. The same had occurred earlier with North and South Korea. South Vietnam became a nominal democracy but an unpopular authoritarian regime, and after the US withdrew its aid, it was overrun by the forces of North Vietnam in 1975.