Yemen Timeline By dicetj 5000 BCE Earliest Settelments date back to this time 1100 BCE The Sabaean Kingdom comes into existence Period: 700 BCE to 680 BCE The Kingdom of Awsan dominated Aden and its surroundings 300 BCE Qataban, Hadramout, and Ma'in become independent from Saba and are established in the Yemeni arena 50 BCE Qataban collapses and is reclaimed by the Sabaeans 25 BCE Rome launches an expedition to Arabia Felix 25 BCE The country falls into chaos, and two clans, the Hamdan and Himyar claim kingship 100 Sana'a is annexed by the Himyarite from the Hamdan 180 Hashdi regain control of Sana'a 515 Himyar becomes divided along religious lines 630 Prophet Mohammed sends his cousin Ali to Sana'a Period: 630 to 631 Major tribes send delegators to Medina during the year of delegations 818 Ziyadid Dynasty is founded in Tihama 1040 Sulayhid Dynasty is founded 1060 Ali ibn Mohammed Al-Sulayhi conquers Zabid 1174 Turan Shah conquers Zabid from the Mahdids 1229 Rasulid Dynasty is established 1632 Al-Mu'ayyad Muhammad sends 1000 men to conquer Mecca 1839 The British Empire fire on Aden from warships 1849 The Ottomans return to Tihama 1911 Imam Yahya hamid ed-Din al-Mutawakkil ruled the northern highlands independently 1925 Imam Yahya capture Al Hudaydah from the Idrisids Nov 30, 1967 The state of South Yemen is formed 1986 Thousands die in the south due to political rivalry 1990 Unified Republic of Yemen is proclaimed, with Saleh as a president 2000 17 US personnel die after a suicide attack on a US naval vessel 2004 Shia Insurgency in Yemen begins 2009 Saudi and Yemeni al-Qaeda branches merge to form AQAP Period: 2011 to 2012 Revolution against president Ali Abdullah Saleh