Anglo-Turkish Commission partially demarcates boundary between Yemen (then part of Ottoman Empire) and British protectorate of Adena

Treaty between Ottoman Turks and Iman Yahya grants special rights to interior Zaydi tribes of the Shia Muslim Sect

Turkish forces withdraw; Imamate of Yemen becomes independent (Nov)

Imam consolidates central government control over rebellious tribes

Anglo-Yemeni Treaty of Sanaa sets stage for future existence of two independent nations in southwest Arabia

Saudi-Yemeni Treaty of Taif ends brief border war and defines some 320 km of Yemen’s northern boundary; Disputed area of Asir lost to Saudi Arabia

US recognizes Imamate of Yemen

Imam Yahya assassinated; Succeeded by son Ahmed who repeatedly presses claim to British colony and protectorate of Ade

Pro-Nasirist sentiments lead to loose federation with Egypt and Syria . . . (United Arab States)

Imam Ahmad dies; Military coup in Sanaa; Yemen Arab Republic is proclaimed; Eight-year civil war begins between Egyptian-backed republicans and Saudi-backed royalists

Last Egyptian troops depart by year’s end

Agreement to end civil war signed in Jiddah; First nationwide elections

Border clashes with South Yemen escalate into war; Mediation results in cease-fire and agreement to implement 1972 unification

Discovery of oil near Ma’rib by American Oil Company (Yemen Hunt Oil Company); First exports through Red Sea terminal by 1987

Pro-Western North Yemen and Marxist South Yemen Merge into Republic of Yemen