Almoravids And Almohads
While the Hilalian Arabs were conquering and destroying northern Morocco another but more fruitful invasion was upon her from the south. The Almoravids, one of the tribes of Veiled Men of the south, driven by the usual mixture of religious zeal and lust of booty, set out to invade the rich black kingdoms north of the Sahara. Thence they crossed the Atlas under their great chief, Youssef-ben-Tachfin, and founded the city of Marrakech in 1062. From Marrakech they advanced on Idrissite Fez and the valley of the Moulouya. Fez rose against her conquerors, and Youssef put all the male inhabitants to d**h. By 1084 he was master of Tangier and the Rif, and his rule stretched as far west as Tlemcen, Oran and finally Algiers.
His ambition drove him across the straits to Spain, where he conquered one Moslem prince after another and wiped out the luxurious civilization of Moorish Andalusia. In 1086, at Zallarca, Youssef gave battle to Alphonso VI of Castile and Leon. The Almoravid army was a strange rabble of Arabs, Berbers, blacks, wild tribes of the Sahara and Christian mercenaries. They conquered the Spanish forces, and Youssef left to his successors an empire extending from the Ebro to Senegal and from the Atlantic coast of Africa to the borders of Tunisia. But the empire fell to pieces of its own weight, leaving little record of its brief and stormy existence. While Youssef was routing the forces of Christianity at Zallarca in Spain, another schismatic tribe of his own people was detaching Marrakech and the south from his rule.
The leader of the new invasion was a Mahdi, one of the numerous Saviours of the World who have carried d**h and destruction throughout Islam. His name was Ibn-Toumert, and he had travelled in Egypt, Syria and Spain, and made the pilgrimage to Mecca. Preaching the doctrine of a purified monotheism, he called his followers the Almohads or Unitarians, to distinguish them from the polytheistic Almoravids, whose heresies he denounced. He fortified the city of Tinmel in the Souss, and built there a mosque of which the ruins still exist. When he died, in 1128, he designated as his successor Abd-el-Moumen, the son of a potter, who had been his disciple.
Abd-el-Moumen carried on the campaign against the Almoravids. He fought them not only in Morocco but in Spain, taking Cadiz, Cordova, Granada as well as Tlemcen and Fez. In 1152 his African dominion reached from Tripoli to the Souss, and he had formed a disciplined army in which Christian mercenaries from France and Spain fought side by side with Berbers and Soudanese. This great captain was also a great administrator, and under his rule Africa was surveyed from the Souss to Barka, the country was policed, agriculture was protected, and the caravans journeyed safely over the trade-routes.
Abd-el-Moumen died in 1163 and was followed by his son, who, though he suffered reverses in Spain, was also a great ruler. He died in 1184, and his son, Yacoub-el-Mansour, avenged his father's ill-success in Spain by the great victory of Alarcos and the conquest of Madrid. Yacoub-el-Mansour was the greatest of Moroccan Sultans. So far did his fame extend that the illustrious Saladin sent him presents and asked the help of his fleet. He was a builder as well as a fighter, and the noblest period of Arab art in Morocco and Spain coincides with his reign.
After his d**h, the Almohad empire followed the downward curve to which all Oriental rule seems destined. In Spain, the Berber forces were beaten in the great Christian victory of Las-Navas-de Tolosa, and in Morocco itself the first stirrings of the Beni-Merins (a new tribe from the Sahara) were preparing the way for a new dynasty.