950-115 BCE: Kingdom of Sheba, whose riches were based upon caravan trade and agriculture with artificial watering.
Around 400: The Sabaean king of Yemen visits Yathrib in Arabia, and converts to Judaism. He makes it the state religion of Yemen.
7th century: Conversion into Islam, the region joins the Caliphate.
9th century- 1517 Shi'i (Zayyid) dynasties in the north.
1517-1635: Ottoman supremacy.
1538: Aden captured by the Ottomans.
19th century: British establishes a foothold on the southern coast.
1839: The British captures Aden.
1869: The building of the Suez Canal brings Aden to an important position in international trade.
1882-1918: The British increases its position into most of what became South Yemen (incl. Hadramawt).
1918: (Northern) Yemen gets independence with the fall of the Ottoman Empire.
1918- 34: Conflict between Yemen and the British on the status of Aden and Hadramawt.
1958- 61: Yemen enters a union with United Arab Republic.
1959: Small states in the areas around Aden and in Hadramawt establishes The South Arabian Federation.
1962: Republican coup in Yemen against the Zayyidi Caliph. Civil war starts. Egypt supports the republicans, Saudi Arabia the Caliph's party.
1962: Aden joins The South Arabian Federation.
1967: Civil war ends in the north.
1967: Independence for People's Republic South Yemen.
1969: Communists win a conflict in South Yemen. Name changes to People's Democratic Republic of Yemen (1970).
1970: Treaty between the two groups of the civil war in the north. Republic remains.
1972: Military conflict between the northern and the southern Yemen. Peace treaty concludes with a forthcoming unification of the two countries.
1974: Coup in the north.
1978: Ali Abdallah Salah becomes the new president of the northern Yemen.
1978- 79: Crisis and war between the north and south of Yemen.
1988, 1989: Treaties on unity are signed.
1990: Unification. Ali Abdallah Salah becomes president of the united Yemen.
1991: Referendum on new constitution.
1991- 92: Unstable conditions and popular unrest.
1993: Democratic elections, several parties. Salah remains president.
1993: Disputes between prime minister Abu Bakru l-Attas (from the south) and Salah on the road of unification.
1994 May: Civil war starts, by southern groups receving large sums in foreign aid, mainly from Saudi Arabia. A new state of South Yemen is declared, named Democratic Republic of Yemen, governed from Aden.
July 7: Aden falls, and with it the short-lived Democratic Republic of Yemen.
1999: First direct presidential elections held, reelecting Saleh.
2004 June: Armed conflict in the northwestern governorate Sa'dah begins.