Collection of facts about the Fatimid Caliphate

This post is a collection of facts about the Fatimid Caliphate (909 - 1171 AD). There are 10 facts listed below. Source: Wikipedia

• Overthrew Aghlabid dynasty in 909 AD
• Existed during the Abbasid Caliphate
• Based in Ifriqiya (Tunisia and eastern Algeria)
• Extended to Egypt, Maghreb, Sicily and Levant
• Ruled by Isma'ili Shi'a dynasty
• Rulers descended from Muhammad's daughter Fatima and Ali
• Conquered Egypt in 969 AD 
• Capital moved from Tunisia to Cairo in 973 AD
• Fought Seljuk Empire and Crusaders in Levant
• Succeed by Ayyubid dynasty in 1171 AD