1086 Al-Mutamid, emir of Seville, asks Yusuf, the Almoravid chief in Africa, for assistance. He comes, and defeats Alfonso at Zallaka.
1087 Yusuf returns to Africa. The Cid defeats the Moors at Al-Coraza, and captures Huesca.
1088 Yusuf recalled to Spain, but is able to accomplish nothing, owing to discord and dissension among the emirs.
1089 The Moors besiege Alid, but are driven off by Alfonso. Yusuf returns to Africa.
1090 Yusuf returns to Spain with a large army, and conquers Granada.
1091 Conquest of Seville and Almeria by Yusuf. Al-Mutamin sent to Africa a prisoner. Yusuf is now supreme in the Mohammedan regions of Spain.
THE ALMORAVID DYNASTY (1091-1146 A.D.)
The Almoravids are a confederation of Berber sectaries who have established a vast kingdom in Africa. The king, Yusuf b. Tashufin, establishes his capital at Morocco, in 1069, and his intrusion into the affairs of Spain is explained above.
1092 Valencia betrayed to the Almoravids. Al-Kadir, the emir, slain.
1093 Yusuf captures Badajoz and puts the emir Al-Mutawakkil to death.