The Almohad Caliphate (Berber: Imweḥḥden, from Arabic الموحدون al-Muwaḥḥidun, "the monotheists" or "the unifiers") was a Moroccan Berber Muslim movement founded in the 12th century.The Almohad movement was started by Ibn Tumart among the Masmuda tribes of southern Morocco. The Almohads first established a Berber state in Tinmel in the Atlas Mountains in roughly 1120. They succeeded in overthrowing the ruling Almoravids in governing Morocco by 1147, when Abd al-Mu'min al-Gumi (r.