- Third caliphate after Muhammad's death
- Ruled by descendants of Muhammad's uncle Abbas ibn Abd al-Muttalib
- Overthrew Umayyad Caliphate in Abbasid Revolution (750 AD)
- Capitals: Baghdad (762-836, 892-1258 AD), Cairo (1261-1517)
- Fourth Fitna (civil war): 811 - 813/837 AD
- Anarchy at Samarra (861 - 870 AD)
- Buyids conquer Baghdad (945 AD)
- Seljuks conquer Baghdad (1055)
- Abbasids regain independence (1165)
- Mongols siege Baghdad (1258)
- Abbasids regain control of Baghdad (1261)
- Conquered by Ottoman Empire (1517)
Sources
Wikipedia: Abbasid Caliphate, Fourth Fitna