About the same as Union and Confederates did in the US Civil War...they spoke the same language but had different accents.
This depends on which north and south are under discussion the north and south of Ireland North Korea and South Korea North Vietnam and South Vietnam the North and South in the American civil war North Dakota and South Dakota .... and many more.
the north won and the south loss
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 WAS located north of the 17th parallel. South VN was south of it.
The North were the communists. The South was the free republic (of South Vietnam).
There no longer is a North Vietnam, North Vietnam and South Vietnam were joined together after the Vietnam War.
North Vietnam launched an invasion of South Vietnam.North Vietnam launched an invasion of South Vietnam.
North Vietnam defeated the South (or the North conquered the South).
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.
For North Vietnam or South Vietnam? The North Vietnamese were known simply as the 'North Vietnamese Army' (NVA) to US forces, but their actual title was Vietnam Peoples' Army, as it common practice in Communist states. The South Vietnamese Army was referred to as the Army of the Republic of Vietnam (ARVN).
The capital of South Vietnam before the Vietnam War is Saigon. It is still used today, but Ho Chi Minh City is more common these days.
There is NO North Vietnam & South Vietnam today (and there hasn't been a north & south for over 30 years; when the north conquered the south, ending the war in 1975). Today's Communist Vietnam is President Triet.