Prior to unification in 1990 Yemen was divided between the Yemen Arab Republic (north Yemen), the capital of which was Sana'a, and the People's Republic of South Yemen, the capital of which was Aden, and which had been a British protectorate between 1838 and 1967. | Prior to unification in 1990 Yemen was divided between the Yemen Arab Republic (north Yemen), the capital of which was Sana'a, and the People's Republic of South Yemen, the capital of which was Aden, and which had been a British protectorate between 1838 and 1967. |