Islamic expansion began in the 7th century. In 670 AD, the first Islamic conquest of the North African coastal plain took place under Uqba ibn Nafi, a general serving under the Umayyads of Damascus. After the outbreak of the Great Berber Revolt in 739, the region's Berber population asserted its independence, forming states and kingdoms such as the Miknasa of Sijilmasa and the Barghawata. Under Idris ibn Abdallah, who was appointed by the Awraba Berbers of Volubilis to be their representative, the country soon cut ties and broke away from the control of the distant Abbasid caliphs in Baghdad and the Umayyad rule in Al-Andalus. The Idrisids established Fes as their capital and Morocco became a centre of Muslim learning and a major regional power. Morocco would reach its height under a series of Berber dynasties that replaced the Idrisids after the 11th century.[16] From the 13th century onwards the country saw an importation of Banu Hilal Arab tribes as Mercenaries. Their arrival was to have a critical effect on the nation: due to them nomadism returned, urban civilization fell and the country's inhabitants were quickly becoming Ruined. The Almoravids, the Almohads, the Marinids, the Wattasids and finally the Saadi dynasty would see Morocco rule most of Northwest Africa, as well as large sections of Islamic Iberia, or Al-Andalus. Following the Reconquista of the Iberian Peninsula, large numbers of Muslims and Jews were forced to flee to Morocco.[17] The Sultan Abderrahmane <b>...</b>