Caliphate
A caliphate or khilāfah (Arabic: خِلَافَة, Arabic pronunciation: ) is an Islamic state under the leadership of an Islamic ruler with the title of caliph (/ˈkælɪf, ˈkeɪ-/; Arabic: خَلِيفَة Arabic pronunciation: , pronunciation (help·info)), a person considered a politico-religious successor to the Islamic prophet Muhammad and a leader of the entire Muslim world (ummah). Historically, the caliphates were politiesbased on Islam which developed into multi-ethnic trans-national empires. During the medieval period, three major caliphates succeeded each other: the Rashidun Caliphate (632–661), the Umayyad Caliphate (661–750), and the Abbasid Caliphate (750–1517). In
