Abbasid revolution (746-750). Abd al-Rahman I, who was of Arab-Berber lineage, managed to evade the Abbasids and flee to the Maghreb and then Iberia, where he founded the Emirate of Córdoba and the Andalusian branch of the Umayyad dynasty. The Moors ruled northern Africa and Al-Andalus for several centuries thereafter. Ibn Hazm, the polymath, mentions that many of the Caliphs in the Umayyad Caliphate and the Caliphate of Córdoba were blond and had light eyes. Ibn Hazm mentions that he preferred blondes, and notes that there was much interest in blondes in al-Andalus amongst the rulers and regular Muslims: The languages spoken in the parts of the Iberian Peninsula under Muslim rule were Andalusian Arabic and Mozarabic; they became extinct after the expulsion of the Moriscos, but Arabic language influence on the Spanish language can still be found today. The Muslims were resisted in parts of the Iberian Peninsula in areas of the northwest (such as Asturias, where they were defeated at the battle of Covadonga) and the largely Basque Country in the Pyrenees. Though the number of Moorish colonists was small, many native Iberian inhabitants converted to Islam. By 1000, according to Ronald Segal, some 5,000,000 of Iberia's 7,000,000 inhabitants, most of them descended from indigenous Iberian converts, were Muslim. There were also Sub-Saharan Africans who had been absorbed into al-Andalus to be used as soldiers and slaves. The Berber and Sub-Saharan African soldiers were known as "tangerines" because they were imported through Tangier. The Caliphate of Córdoba collapsed in 1031 and the Islamic territory in Iberia fell under the rule of the Almohad Caliphate in 1153. This second stage was guided by a version of Islam that left behind the more tolerant practices of the past. Al-Andalus broke up into a number of taifas (fiefs), which were partly consolidated under the Caliphate of Córdoba. The Kingdom of Asturias, a small northwestern Christian Iberian kingdom, initiated the Reconquista ("Reconquest") soon after the Islamic conquest in the 8th century. Christian states based in the north and west slowly extended their power over the rest of Iberia. The Kingdom of Navarre, the Kingdom of Galicia, the Kingdom of León, the Kingdom of Portugal, the Kingdom of Aragon, the Marca Hispánica, and the Crown of Castile began a process of expansion and internal consolidation during the next several centuries under the flag of Reconquista. In 1212, a coalition of Christian kings under