Historical Periods
Democratic Republic of Vietnam (1956–1966)
1956 CE – 1966 CE
Capital: HanoiArea: 157,594 km²
Democratic Republic of Vietnam (1967–1972)
1967 CE – 1972 CE
Capital: HanoiArea: 158,088 km²
Democratic Republic of Vietnam (1973–1975)
1973 CE – 1975 CE
Capital: HanoiArea: 186,286 km²