TimeLine of Abbassids
From Mw
752 CE (134 AH): Beginning of Abbasid Khilafah.
755 CE (137 AH): Revolt of Abdullah bin Ali. Murder of Abu Muslim.
756 CE (138 AH): Abd al-Rahman founds the Ummayyad state in Spain.
763 CE (145 AH): Foundation of Baghdad. Defeat of the Abbasids in Spain.
767 CE (149 AH): Khariji state set up by Ibn Madrar at Sijilmasa.
786 CE (169 AH): Haroon Al-Rashid becomes Khalifah.
792 CE (175 AH): Invasion of South France.
800 CE (183 AH): Scientific method is developed. Algebra is invented by Al-Khawarizmi.
805 CE (189 AH): Campaigns against the Byzantines. Capture of the islands of Rhodes and Cyprus.
809 CE (193 AH): Death of Haroon Al-Rashid. Accession of Amin.
814 CE (198 AH): Civil war between Amin and Mamun. Amin killed and Mamun becomes the Khalifah. Bayt-ul-Hikmat is founded in his time.
900 CE (286 AH): Pendulum developed by Yunus Al-Masri.
976 CE (365 AH): Muhammad bin Ahmad introduces the number Zero.
1000 CE (390 AH): Ibn al-Haytham discovers that white light consists of various rays of colored light. The building of the Great Mosque of Cordoba is completed.
1005 CE (395 AH): Mahmood Ghaznavi captures Multan and Ghur.
1055 CE (446 AH): Baghdad is conquered by the Seljuk Turks. Abbasid-Seljuk rule starts, which lasts until 1258 when Mongols destroy Baghdad.
1085 CE (477 AH): Christians get Toledo (in Spain).
1091 CE (483 AH): Normans capture Sicily, ending Muslim rule there.
1095 CE (487 AH): The first crusade takes place.
1099 CE (492 AH): Crusaders capture Jerusalem. They mercilessly slaughter everyone inside its walls.
1100 CE (493 AH): Muslims introduce negative numbers.
1144 CE (538 AH): Imam-ud Din captures Edessa from Christians. Second crusade takes place.
1187 CE (582 AH): Salahuddin liberates Jerusalem from Christians in the most peaceful way possible. Third crusade takes place in which Christians only get Acre after months of bloodshed.
1194 CE (589 AH): Muslims occupy Delhi, India.
1236 CE (633 AH): Christians conquer Cordoba (in Spain).
1258 CE (655 AH): Mongols sack Baghdad. Thousands of people killed and great libraries burned. Fall of Baghdad. End of Abbasid rule.
