عبد الله بن ياسين
The Almoravid dynasty () was an imperial Berber Muslim dynasty centered in Morocco. It established an empire in the 11th century that stretched over the western Maghreb and Al-Andalus. Founded by Abdallah ibn Yasin, the Almoravid capital was Marrakesh, a city the ruling house founded in 1062. The dynasty originated among the Lamtuna and the Gudala, nomadic Berber tribes of the Western Sahara, traversing the territory between the Draa, the Niger, and the Senegal rivers.