People's Democratic Republic of Yemen

State · 1969–1989 CE · at its largest around 1969 CE

South Yemen, formed from the former British colony of Aden and its protectorates, which became the Arab world's only Marxist state. It unified with North Yemen in 1990.

On its lands while it lasted

Aden (c. 1969 CE): Capital of People's Democratic Republic of Yemen (1969–1989), Republic of Yemen (1990–1990).