With no US jets and bombers to stop them, the NVA rolled their tanks (T54/55 medium tanks) right through the South's capital gates in April '75.
North Vietnam conquered South Vietnam.
North Vietnam defeated the South (or the North conquered the South).
Thieu was president, until North Vietnam conquered his country (South Vietnam).
There were 3 countries: North Vietnam, South Vietnam, and Vietnam. N & S Vietnam were created in 1954/55. Vietnam was created in 1975/76. Vietnam hasn't conquered anybody. North Vietnam conquered South Vietnam in 1975
The North invaded the South and defeated them (conquered them).
The (Republic of) South Vietnam (RVN) ceased to exist when it was conquered by North Vietnam on 30 April 1975. North & South Vietnam merged into one nation...Vietnam.
There IS no North and South Vietnam, only Vietnam. After the US withdrew combat forces from South Vietnam, North Vietnam violated the peace agreement, invaded and conquered South Vietnam. Game over.
North Vietnam conquered South Vietnam and became one nation. The Republic of South Vietnam no longer exists.
Nonexistent. South Vietnam ceased to exist in 1975 When North Vietnam successfully conquered the south. There is only Vietnam now.
To save the Republic of South Vietnam from being conquered by the COMMUNIST country of North Vietnam.
The communists conquered the Republic of South Vietnam on 30 April 1975.
Preserving the Republic of South Vietnam from being conquered by Communist North Vietnam.