ARVN=Army Republic of South Vietnam. NVA=North Vietnamese Army.
Presuming you mean the government supported by the US: The Republic of South Vietnam.
A free democratic Republic of South Vietnam; pending elections.
SOUTH Vietnam was called the "REPUBLIC of South Vietnam." Everyone in those days just called North Vietnam...NORTH VIETNAM.
Which Korea and which Vietnam? Today's Vietnam or the old North and South Vietnam?
Eisenhower sent troops to South Vietnam so they can fight North Vietnam because North Vietnam wanted to take over South Vietnam and they did.
democratic GiOsItO
South Vietnam no longer existed after 1975. People in the "former" Republic of South Vietnam became "Vietnamese" citizens under their new "Communist" government.
When the French left Vietnam, the country was divided in to two parts, north Vietnam which was under communist control, and south Vietnam that was officially democratic, but was actually in practice a totalitarian state. The Norht Vietnamese beleived that the south was a colony of foreign powers and wanted to unite Vietnam into one country, under communist rule. South Vietnam and the United States wanted to prevent the communists from taking over south Vietnam. The war was started by south vietnamese rebels who were opposed to the corruption of the south vietnamese regime. North Vietnam supported these rebels who were commonly known as the Viet Cong. The United States supported South Vietnam in spite of its corrupt government in the belief that it was better to have a corrupt government in south Vietnam than a communist government.
Communist sympathizers living in South Vietnam; often conducting guerrilla warfare against Republic of South Vietnam Government forces.
Diem
At first, it seemed as though the Vietnam War was between North Vietnam and the U.S. with South Vietnam supporting them. In reality, the South Vietnam's Pro-Democratic government treated their people so badly, that they formed a secondary army, called the Vietcong or VC, and worked alongside the North Vietnamese to drive out the US forces. This was done so they could establish a Communist government because the new Capitalist government was not helping them.