Fatimid Caliphate

The Fatimid Caliphate (; Arabic: الخلافة الفاطمیّة, romanised: al-Khilāfa al-Fāṭimiyya), also known as the Fatimid Empire, was a caliphate that existed from the tenth to the twelfth centuries CE under the rule of the Fatimids, an Isma'ili Shi'a dynasty. Spanning a large area of North Africa and West Asia, it ranged from the western in the west to the Red Sea in the east. The Fatimids traced their ancestry to the Islamic prophet Muhammad's daughter Fatima and her husband Ali, considered the first Imam of Shi'a Islam. The Fatimids were acknowledged as the rightful imams by different Isma'ili communities as well as by denominations in many other Muslim lands and adjacent regions. Starting in Ifriqiya under the Aghlabids, who were themselves nominally under the Abbasid Caliphate, the Fatimids eventually overthrew both, and extended their rule across the Mediterranean coast, ultimately making Egypt the centre of their caliphate. At its height, the caliphate included—in addition to Egypt—varying areas of the Maghreb, Sicily, the Levant, and the Hejaz.

Between 902 and 909, the foundation of the Fatimid state was realised under the leadership of da'i (missionary) Abu Abdallah, who led Kutama tribal forces in establishing an Isma'ili state and then conquering Aghlabid Ifriqiya, thus paving the way for the establishment of the Caliphate. After the conquest, Abdallah al-Mahdi Billah was retrieved from his temporary residence in Sijilmasa, a remote Moroccan city at the edge of the Sahara, and then accepted as the Imam of the movement, becoming the first Caliph and the founder of the dynasty in 909. In 921, the city of al-Mahdiyya was established on the coast of modern-day Tunisia as the capital. In 948, the capital was shifted their to al-Mansuriyya, near Kairouan, also in modern-day Tunisia. In 969, during the reign of al-Mu'izz, the Fatimids conquered Egypt, and in 973, the center of the caliphate was moved to the newly founded Fatimid capital of Cairo. Egypt became the political, cultural, and religious centre of the empire and it developed a new and "indigenous Arabic culture". After its initial conquests, the caliphate often allowed a degree of religious tolerance towards non-Shi'a sects of Islam, as well as to Jews and Christians. However, its leaders made little headway in persuading the Egyptian population to adopt its religious beliefs.

After the reigns of al-'Aziz and al-Hakim, the long reign of al-Mustansir entrenched a regime in which the caliph remained aloof from state affairs and viziers took on greater importance. Political and ethnic factionalism within the army led to a civil war in the 1060s, which threatened the empire's survival. After a period of revival during the tenure of the vizier Badr al-Jamali, the Fatimid caliphate declined rapidly during the late eleventh and twelfth centuries. In addition to internal difficulties, the caliphate was weakened by the encroachment of the Seljuk Turks into Syria in the 1070s and the arrival of the Crusaders in the Levant in 1097. In 1171, Saladin abolished the dynasty's rule and founded the Ayyubid dynasty, which incorporated the Levant and Egypt back into the nominal sphere of authority of the Abbasid Caliphate.