Important Events in the Baghdad Area By double cork 720 Jan 1, 750 The Rise of the Abbasid Caliphate Period: Jan 1, 750 to Feb 5, 1258 Spreading of Muslim Influence Jan 1, 1120 The Fall of the Khwarizm Empire This allowed the Assassins to rise to prominence and control the nobles through fear of assasination. Feb 5, 1258 The Sacking of Baghdad Mar 2, 2022 Creation of the House of Wisdom