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Caliphate - Wikipedia
List of caliphs - Wikipedia
Caliphate | History, Empire, Meaning, & Definition | Britannica
Umayyad Caliphate - Wikipedia
Caliph - Simple English Wikipedia, the free encyclopedia
Caliphate - Simple English Wikipedia, the free encyclopedia
Abbasid Caliphate - Wikipedia
Ottoman Caliphate - Wikipedia
List of Abbasid caliphs - Wikipedia
Abbasid Caliphate - Simple English Wikipedia, the free …