Islam Timeline By xbrandonetheridgex Oct 20, 622 Muhammad flees Mecca to Medina. Oct 20, 632 Muhammad dies. Oct 20, 661 Ali the fourth caliph in Islam is assassinated. Oct 20, 1031 Umayyad dynasty ends and Abbassid dynasty begins. Oct 20, 1099 Christian crusaders capture Jerusalem from the Muslims. Oct 20, 1187 Saladin caputures Jerusalem for the Muslims. Oct 20, 1258 Abbassid dynasty ends. Oct 20, 1502 Abbas the Great gains control of the Safavid Empire. Oct 20, 1520 Suleiman the Magnificent becomes the ruler of the Ottoman empire. Oct 20, 1632 The Taj Mahal is built.