The country's capital Hanoi, the original North Viet Nam. When Viet Nam North Viet Nam war, victorious in South Viet Nam and have incorporated into one. Thus established, Hanoi is the capital of the country.
Hanoi is the capital of North Vietnam. When North Vietnam won the Vietnam War, and Vietnam, as well as a part already. The establishment of the Hanoi is the capital of the country.
Hanoi was a former capital of North Vietnam. When the North Vietnamese victory in the Vietnam War and the South Vietnam into a part. It made Hanoi is the capital of the country.