The Fatimids, an Isma'ili Shi'a caliphate which was based in Ifriqiya (Tunisia), conquered Egypt in 969 CE during the reign of Caliph al-Mu'izz. Their army, composed mostly of North African Kutama Berbers, was led by the general Jawhar al-Siqilli. In 970, under instructions from al-Mu'izz, Jawhar planned, founded, and constructed a new city to serve as the residence and center of power for the Fatimid Caliphs. The city was named "al-Mu'izziyya al-Qaahirah", the "Victorious City of al-Mu'izz", later simply called "al-Qahira", which gave us the modern name of Cairo.