Addie's Islamic History By addie.ehlers 1258 BCE Mongol Kills Baghdad Caliph 1099 BCE Christians Recapture Jerusalem 1048 BCE Omar Khayyam is born 1025 BCE Encyclopedia Complete, standard textbook 972 BCE University Cairgo, Egypt Founded 780 BCE Father of Algebra Born 750 BCE Scientific and Artistic Achievement 732 BCE Army Pushes Until Defeat 711 BCE Muslims, Spain gain Peninsula 692 BCE Dome Rock Completed Jerusalem 680 BCE Hussein killed at Karbala 661 BCE Umayyad control, capital Damascus 656 BCE Ali bin Talib fourth 644 BCE Uthman third, standardized Quran 634 BCE Umar second, Empire Expands 632 BCE Muhammad leader, first Caliphs 630 BCE Muhammad returns, gains control 622 BCE Muhammad move Medina, Hiraj 610 BCE Islam, Muhammad receives Quran 570 BCE Muhammad born in Mecca 1178 Saladin retakes Jerusalem