Final answer:
Enslaved people in the Arab world came from various regions, including Africa, Asia, India, and Europe, influenced by the trans-Saharan, Indian Ocean, and European trade networks.
Step-by-step explanation:
In the Arab world, enslaved people were often of diverse origins, including African, Asian, Indian, and European descent. The Arab slave trade encompassed many regions and ethnic groups. Africans were brought into slavery via routes like the trans-Saharan slave trade and the Indian Ocean trade network.
These networks extended from East Africa to the Middle East, North Africa, and even as far as India and China. Europeans were enslaved by Viking traders and through various European conflicts, eventually also becoming part of the Islamic world's trade in enslaved people.
Additionally, with the Islamic expansion, black Africans and Europeans alike were enslaved and sold into various regions of the Muslim world. Likewise, the trade of enslaved people from Eastern Europe played an important role in many parts of Europe and the Ottoman Empire.