We were taught about Atlantic slavery, slave ships, and the plantations of the Americas. But long before that, and for thirteen centuries, another form of slavery bled Africa dry: the Arab-Muslim slave trade. From trans-Saharan commerce to the slave markets of Zanzibar, from the Zanj Revolt to the mutilation of eunuchs, millions of African men, women, and children were captured, deported, and erased from memory. This long, brutal, and still little-known history remains one of the great silences of school textbooks.
The Forgotten Slavery: From Trans-Saharan Trade to the Sultans of the Indian Ocean
In the collective imagination and in school textbooks, the history of Black slavery is almost always written to the rhythm of the Atlantic crossing: European slave ships, deportation to the Americas, and the sugar and cotton plantations. While this memory is essential, it does not tell the whole story. For there is another chapter of history, older, longer, and equally brutal: the enslavement of Africans by Arabs.
Beginning in the 7th century, with the expansion of Islam, trans-Saharan and eastern slave-trading networks emerged and supplied the markets of the Middle East, North Africa, Persia, India, and even China for nearly thirteen centuries. Caravan traders and merchants captured, purchased, or exchanged Black men, women, and children destined to serve as soldiers, domestic servants, concubines, artisans, or porters.
Yet this history, which continued until very late abolitions (Saudi Arabia in 1962, Mauritania in 1981), remains largely absent from school curricula. While millions of Africans disappeared along these caravan routes or saw their descendants erased through the widespread practice of castration, Arab-Muslim slavery remains a blind spot in public memory.
Why the silence? Why is this slave trade, whose scale and duration rivaled the Atlantic trade, taught so little? These are the shadowed areas that Nofi seeks to explore by revisiting seven rarely discussed facts about the enslavement of Black people in the Arab-Muslim world.
1. A Slave Trade Older Than the Atlantic Trade
The enslavement of Black people by Arabs did not begin with colonial Europe; it predated it by several centuries. As early as the 7th century, during the Arab expansion and the Islamization of the Near East and North Africa, slave-trading networks became organized. Muslim armies and caravans crossed the Sahara, establishing commercial routes linking the Sahel to the great cities of the Maghreb and the Middle East.
These caravan routes (connecting Gao, Timbuktu, and Kano to Tripoli, Tunis, and Cairo) supplied African slaves to markets for centuries. Captives were put to many uses: domestic servants in urban households, soldiers in armies, concubines in harems, artisans in workshops, and porters along desert routes.
The system extended beyond the Arab world. Through the Red Sea, the Persian Gulf, and the Indian Ocean, Muslim merchants also exported captives to India, Persia, and sometimes as far as China. This trade became a major pillar of the medieval Islamic economy long before Europe organized its own slave trade.
By comparison, the Arab-Muslim slave trade began nearly seven centuries before the Atlantic slave trade. When the first Portuguese ships reached the coasts of West Africa in the 15th century, the capture and deportation of Africans toward the North and East had already been a reality for generations.
This precedence partly explains the depth of slavery’s imprint on the social structures of the Muslim world: it was not a temporary episode but a system embedded in the long sweep of history.
2. The Trans-Saharan Trade: The Backbone
The beating heart of Arab-Muslim slavery was the Sahara, a desert that, far from being a barrier, served as a vast economic artery linking sub-Saharan Africa to the Maghreb and the Middle East. From the Middle Ages onward, major caravan routes stretched from Gao, Timbuktu, and Kano to Tripoli, Tunis, and Cairo.
These expeditions were immense: thousands of camels carrying salt, gold, and, of course, human beings. Slaves captured in the kingdoms of the Sahel or during raids farther south were forced to march hundreds, sometimes thousands, of miles. Many died from exhaustion, thirst, or disease before reaching their destination.
Those who survived met various fates. Some became porters and agricultural laborers in oasis settlements; others were castrated to serve as eunuchs in harems and palaces; still others were assigned domestic, artisanal, or military duties.
The central role of this trade was sustained by the great Arab-Muslim empires: the Umayyads and the Abbasids, who quickly integrated African captives into their institutions, and later the Mamluks of Egypt, who made slavery a pillar of their power.
Over more than ten centuries, historians estimate that millions of Black captives were deported through the trans-Saharan trade. Although exact numbers remain difficult to establish due to the lack of precise records, the duration and consistency of this commerce make it one of the longest and most destructive systems in world history.
In short, the Sahara, often perceived as a natural frontier, was in reality the backbone of the enslavement of entire generations of Africans bound for the Arab-Muslim world.
3. The “Zanj”: Black Slaves in Iraq and the Great Revolt (869–883)
Among the most striking episodes of Arab-Muslim slavery was the Zanj Revolt in 9th-century Iraq. The term “Zanj” referred to Black slaves from the eastern coast of Africa (Zanzibar, Tanzania, and the Comoros), captured by Arab merchants and transported to the Persian Gulf.
These captives were mainly employed in the marshlands of Lower Mesopotamia, in what is now southern Iraq. Their task was to drain swampy land under a relentless sun in order to transform it into agricultural fields. Working conditions were horrific: heat, disease, and chronic shortages of food.
In 869, an uprising erupted. Thousands of Zanj, worn down by years of oppression, took up arms under the leadership of a charismatic figure, Ali ibn Muhammad. The movement quickly grew, mobilizing tens of thousands of slaves and attracting other discontented groups, including poor free men.
For nearly 14 years, the Zanj resisted the Abbasid armies. They even established a kind of insurgent state, complete with fortified bases, a military hierarchy, and successful raids reaching the gates of Basra. It was the first great slave rebellion of the Islamic world, an event that deeply shook the caliphate.
