The British captures Aden . The building of the Suez Canal brings Aden to an important position in international trade. Conflict between Yemen and the British on the status of Aden and Hadramawt. Yemen enters a union with United Arab Republic. Small states in the areas around Aden and in Hadramawt establishes The South Arabian Federation.
Civil war starts.
Egypt supports the republicans, Saudi Arabia the Caliph's party. Aden joins The South Arabian Federation. Independence for People's Republic South Yemen. Treaty between the two groups of the civil war in the north. Military conflict between the northern and the southern Yemen.