false
False.
After the treaty.
North VN invaded and ultimately conquered South VN. South VN never invaded North VN.
The North Vietnamese Army would break the treaty and invaded South Vietnam. South Vietnam quickly fell to North Vietnam, which created one, Socialist Vietnam.
Somewhat democratic South Vietnam was a member of the South East Asia Treaty Organization (SEATO), so by treaty, we were obligated to help defend South Vietnam. We entered the Vietnam War to help South Vietnam stop Communist North Vietnam from their attempts to unify the whole country.
In 1974 the north Vietnamese broke the treaty,and in 1975 they completely took over south Vietnam.
There was no ONE party in control of Vietnam. Initially it was North and South Vietnam. But after the U.S. and the Soviet Union had left, South Vietnam was converted to communism and a treaty of sorts was created, unifying North and South Vietnam into one country.
Treaties are for Armistices (temporary truce), mutual agreements to end the fighting. There are no treaties for total victory or total defeat. The VN war ended with total defeat for the South; and total victory for the North.
There no longer is a North Vietnam, North Vietnam and South Vietnam were joined together after the Vietnam War.
They were called peace negotiations; and the US simply wanted the North Vietnamese to pull their troops out of SOUTH Vietnam and quit trying to take it over.
Australia was a member of the South East Asia Treaty Organization, as was South Vietnam. SEATO was the pacific alliance that drew together the U.S., Korea, Philippines, and Australia to defend South Vietnam against a take-over by North Vietnam.