The western territories of Islam were marked by striking ethnic and social diversity. Berbers formed the demographic foundation of the Maghrib, while Iberians and Goths remained important in Spain. Arabs were comparatively few before the mid-eleventh century, and other populations included Europeans grouped under the designation Sakaliba and Black Africans associated with elite households and the personal guards of rulers. This composition created a society whose identities were shaped by overlapping ethnic, religious, and social affiliations.

Medieval society was organized into slaves, freed dependants known as mawali, and freemen. Slaves were especially numerous in major cities and worked in domestic service, crafts, agriculture, administration, and elite households. Enfranchisement and the purchase of liberty allowed many to enter the ranks of the mawali, who remained connected to former masters through patronage. Freemen were divided between the wealthy and influential khassa and the broader amma, but social mobility meant that these categories were not completely closed.

Religious and racial boundaries were also permeable. Islam became the majority religion by the ninth century, while Judaism and Christianity continued among native populations protected as dhimmis. Muslims and non-Muslims often lived in close proximity, and mixed marriages formed part of ordinary family life. The passage emphasizes that colour prejudice was not a defining feature of these western Muslim societies: Black Africans and people of mixed ancestry could occupy different positions within the social hierarchy.

Several spoken languages coexisted across the region. Berber dialects were particularly widespread in the rural and mountainous Maghrib, whereas Arabic predominated in written culture. In Iberia, a Hispano-Romance language derived from Latin remained in use in both towns and the countryside, and an Ifrikiya-Romance language was spoken by some Christian urban communities. Arabic was also used by dhimmis, including Jewish intellectuals such as Maimonides, demonstrating its role as the principal medium of literary and scholarly expression.

Kayrawan, Cordoba, and Fez stood out as major cultural centres. Their provincial capitals and urban institutions supported poets, men of letters, theologians, jurists, and physicians. Intellectual communication with the eastern Islamic world was sustained by the rihla, a journey combining study and pilgrimage. The anthology Ikd al-Farid, compiled by Ibn Abd Rabbihi of Cordoba, illustrates the influence of eastern literary traditions, while scholars and poets in the western territories adapted those traditions to local settings.

Music and courtly culture also circulated across the region. Ziryab, a Black freed dependant of the Abbasids, travelled from the eastern Islamic world through Kayrawan to Cordoba, where he was welcomed by Abd al-Rahman II. He introduced new musical practices and influenced manners, dress, grooming, and dining among the court and ruling classes. The excerpt connects his innovations with later musical traditions in the Maghrib and Iberia.