Muslim World from 1160-1233 By charden Sep 12, 1170 Death of the Abbasid Caliph Al-Mustanjid Sep 12, 1194 Occupation of Delhi by the Muslim World Sep 12, 1227 Assisination of the Almohad ruler, Abdullah Adil Sep 12, 1230 End of the Khwarezmid Empire Sep 12, 1231 He completed his book titled The Complete History