Trans-Saharan trade requires travel across the Sahara (north and south) to reach sub-Saharan Africa from the North African coast, Europe, to the Levant. While existing from prehistoric times, the peak of trade extended from the 8th century until the early 17th century.
Muslim Arabs hunted, enslaved, tortured and killed ethnic Africans for a millennium. Middle Eastern Muslim Arabs have a history of over 1400 years of human slavery, which even continues today in the Middle East. Arab Muslims controlled, maintained, initiated slavery of ethnic Africans. Islams Arab prophet Muhammad himself brought, kept and sold African slaves.
Sahih Muslim Book 10 Number 3901
Jabir (Allah be pleased with him) reported: There came a slave and pledg- ed allegiance to Allah’s Apostle (may peace be upon him) on migration; he (the Holy Prophet) did not know that he was a slave. Then there came his master and demanded him back, whereupon Allah’s Apostle (may peace be upon him) said: Sell him to me. And he bought him for two black slaves, and he did not afterwards take allegiance from anyone until he had asked him whether he was a slave (or a free man).