عبد الله بن ياسين
In the following centuries, the consolidation of Muslim trading networks, connected by lineage, trade, and Sufi brotherhoods, had reached a peak in West Africa, enabling Muslims to wield tremendous political influence and power. During the reign of Umar II, the then governor of Africa, Ismail ibn Abdullah, was said to have won the Berbers to Islam by his just administration. Other early notable missionaries include Abdallah ibn Yasin, who started a movement which caused thousands of Berbers to accept Islam.