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Aden comes under British rule, and when the Suez Canal opens in 1869 serves as a major refuelling port.
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Ottomans return to north, but later face revolt.
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Treaty between Ottoman Turks and Imam Yahya grants special rights to interior Zaydi tribes of Shia Muslim sect
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Ottoman empire dissolves, North Yemen gains independence and is ruled by Imam Yahya.
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Yahya assassinated, but his son Ahmad beats off opponents of feudal rule and succeeds his father.
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Imam Ahmad dies, succeeded by his son but army officers seize power, set up the Yemen Arab Republic (YAR), sparking civil war between royalists supported by Saudi Arabia and republicans backed by Egypt.
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Formation of southern Yemen, comprising Aden and former Protectorate of South Arabia. Country is later officially known as the People's Democratic Republic of Yemen (PDRY). Programme of nationalisation begins.
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Thousands flee to north following crackdown on dissidents. Armed groups formed in bid to overthrow government.
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Border clashes between YAR and PDRY, ceasefire brokered by Arab League
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Ali Abdallah Saleh named as president of YAR.
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Earthquake kills 3,000.
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Unified Republic of Yemen proclaimed, with Saleh as president.
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Coalition government formed, made up of ruling parties of former north and south.
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Yemen, Eritrea clash over disputed island territory.
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US naval vessel USS Cole damaged in suicide attack in Aden which is subsequently blamed on al-Qaeda. Seventeen US personnel killed.
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Two militants, suspected of masterminding bombing of USS Cole, are re-arrested.
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President Saleh says the leader of the rebellion in the north has agreed to renounce the campaign in return for a pardon. Minor clashes continue.
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Police and witnesses say at least 36 people are killed across the country in clashes between police and demonstrators protesting about a cut in fuel subsidies.