How The Eastern Empires Imprisoned Millions of African Women in Harems

“There is a chapter of history so vast, so long, and so deliberately buried that most people alive today have never heard its name. Not because it didn’t happen, because someone decided you shouldn’t know. Between the year 650 AD and the early 1900s, over 13 centuries, somewhere between 10 and 18 million Africans were captured, chained, and trafficked across the Sahara Desert and the Indian Ocean into the Arab world.”

“That number is not a rumor. It comes from academic research compiled by historians like Paul Lovejoy and institutions including the Lumen Learning History Archive. 13 centuries. For context, the Atlantic slave trade, the one taught in every school, lasted roughly four centuries, this one lasted three times longer.”

“And the difference wasn’t just duration. It was who they were coming for. While European traders primarily targeted young men, strong bodies for plantations and fields, Arab merchants wanted something else entirely. The ratio of women to men captured in the Arab trade was 3:1. Three women for every man. That wasn’t an accident. It was a market demand.”

“And understanding what that demand was. What it actually meant for the women who were taken is what this story is about. Let’s start at the beginning. Not 650 AD. Before that, before the caravans, before the markets, before the chains start in a village somewhere in East Africa, present day Sudan, Ethiopia, Somalia, the Congo basin, a real place, real people, a woman waking up before sunrise, because the work starts before the light does.”

“We don’t have her name, records, rarely kept names. What we have are the patterns, the documented raids, the eyewitness accounts written down by missionaries, naval officers, and abolitionists in the 19th century. Accounts that describe events that had been repeating in almost identical fashion for over a thousand years before those witnesses arrived.”

“Here is what the pattern looked like. Armed raiders, sometimes Arab merchants, sometimes local African intermediaries working as middlemen, would descend on a settlement. The strongest men who resisted, were killed on the spot. The rest, women, children, older men, were bound and marched.”

“Marched toward the coast, marched toward the desert, marched toward a market that had been running continuously with buyers waiting for generations. One eyewitness account published by the Church Missionary Society in 1868 describes the march in plain language. ‘We faced death every day. People were killed by the stick, by the dagger, and I saw with my own eyes how six men were strangled to death.’”

“‘A newborn was torn away from his mother’s breast and tossed in the bushes crying.’ That account was written down once in 1868. The march it describes had been happening since the 7th century, now the Sahara. For the Trans Saharan route, the crossing was one of the most lethal legs of the entire journey. A typical caravan consisted of between 1,000 and 3,000 camels and up to several hundred captives on foot, chained in pairs, moving under armed guard across one of the most hostile environments on Earth.”

“‘Wish I could forget.’”

“The journey took between 1 month and 2 months. There was almost no water. There was almost no food. And there was no stopping for the week. Historians who have studied mortality rates along these routes documented through caravan records, colonial reports, and physical evidence found along the desert paths estimate that between 20 and 50% of all captives died before reaching their destination. Some estimates go higher.”

“For certain routes in certain periods, the mortality rate was closer to half. Half. Think about what that means for a moment. You are not shipping cargo where losses are a logistical footnote. You are marching human beings across a desert fully aware that somewhere between 1 in 5 and 1 in 2 will not survive the crossing.”

“And the calculation is that it doesn’t matter. The profit margin still works. The bodies were left where they fell. Historian Tidian Nadi in his 2008 work ‘Voile, the Veiled Genocide,’ documented the physical markers of these roots, the bones found along desert paths that correspond precisely to the known caravan trails.”

“The desert preserved what the history books erased. Those bones were mostly women. The oases were the checkpoints. Places like Kufra, Agadez, Gat, Bilmer, names that appear in no school textbook, but which functioned as living warehouses for human beings in transit. Captives were sorted at these stops, evaluated, separated by age, health, and sex.”

“The weakest were abandoned. The others were bound again, restocked on whatever minimal rations kept them walking, and pushed forward. It was at these checkpoints that the separation became permanent. Women and girls were pulled aside, marked. Their value had already been assessed, not for labor, but for something else.”

“The market they were heading toward was not a plantation. It was a harem. The word harem comes from the Arabic ‘haram,’ meaning forbidden or sanctuary. In practice, across the medieval and early modern Arab world, it referred to the private domestic quarters of a wealthy household, a space that could house dozens, sometimes hundreds of women, under the ownership of a single man.”

“The Harem system existed at every level of society, from modest households to the imperial courts of Baghdad, Cairo, and Damascus. At the top of that hierarchy sat the great caliphates. The Abbassid caliphate which ruled from Baghdad from the 8th century onward operated one of the most extensive and institutionalized systems of enslaved concubinage in recorded history. This wasn’t informal.”

“It wasn’t hidden. It was law. It was commerce. It was architecture. The palaces of Baghdad were literally designed around it. Entire wings built to house enslaved women with internal corridors, guards, and hierarchies of rank. And the women who filled those spaces, they came from the caravans.”

“Historian Ronald Seagull in his landmark work, ‘Islam’s Black Slaves, the Other Black Diaspora,’ documented the structure of the harem trade in detail. A young woman captured in East Africa might pass through three or four separate buyers before reaching her final destination. Each transaction increased her price. Each transaction moved her further from anything she had ever known.”

“At the Zanzibar slave market, the largest and most documented hub of the East African trade, the process of sale was described in detail by 19th century eyewitnesses. Women were walked in lines through the market while buyers examined them. The Church of England missionary David Livingston, who visited Zanzibar in the 1860s, documented the conditions there in dispatches that would eventually reach the British Parliament.”

“He described the market scale. ‘Up to 70,000 enslaved people were on the island at a time by the 1850s. 70,000 on one island.’ The underground holding cells beneath Stone Town still exist today. Tourists visit them. The room where women and children were kept measures just a few meters across. Yet records indicate it routinely held up to 75 people at a time.”

“No windows, stone walls, a narrow slot near the ceiling for air. Guides at the site today explained that the oxygen frequently ran out. People died in those rooms waiting to be sold. Now, what happened after the sale? This is where the history becomes both more specific and more difficult to trace.”

“Not because it wasn’t documented, because the documentation was scattered across the private records of merchants, the accounts of former captives who reached British naval ships, and the archives of abolitionist organizations working in the 19th century. Some of those accounts survived. One of the most detailed comes from the records of Admiral George Sullivan, who commanded British anti-slave patrol cruisers in the Indian Ocean in the 1860s.”

“When his ships intercepted slavers, the captives were interviewed through translators. Their testimonies were recorded in the Admiralty archives. One man named Ysef in the records described being invited to deliver a letter for a trader and then detained by force. 3 days later he was loaded onto a boat at night with nine other enslaved people and taken to the island of Pemba.”

“That was the mechanism. Trust then capture. Commerce dressed as normalcy. For women the trajectory after capture was specific. Historian John Almila Azumar in the ‘Legacy of Arab Islam in Africa’ documented the categories of enslaved women absorbed into Arab households. Some were assigned to domestic labor.”

“Others entered the concubinage system directly. A legally codified institution under which an enslaved woman had no recourse, no recognized right to refuse and no path to freedom except through the discretion of her owner. There was one exception under Islamic jurisprudence as it was applied in this period.”

“If an enslaved woman bore her master’s child, she technically acquired a protected legal status. She could not be sold. Her child would be born free. That sounds like a mercy. In practice, it was a system that gave an enslaved woman one narrow path towards something resembling security. And that path required her to produce a child for the man who owned her.”

“Millions of women navigated that reality. Here is the historical mystery that scholars have never fully resolved. Between 650 AD and 1900, somewhere between 10 and 18 million Africans were transported into the Arab world. The majority were women. Unlike the descendants of Atlantic slavery, who are visible across the Americas, in the United States, Brazil, the Caribbean, the descendants of the Arab slave trade are largely invisible in the Middle East today.”

“Where did they go? This question drove historians like Ronald Seagull and Tidian Nadi to look deeper. The answer they found is one of the most disturbing demographic facts in recorded history. The Harem system was not designed for family continuity. It was designed for service and for pleasure and it actively prevented the formation of lasting bloodlines.”

“Children born to enslaved concubines were often recognized by their fathers and absorbed into the free population. The mothers, if they did not achieve the protected status, could be sold again after childbirth. And the male captives for those designated to serve in certain roles, particularly in the royal harems and elite households, castration was systematically practiced.”

“Nadi, drawing on documented records from central Africa and accounts from caravan routes, estimated that between 70% and 80% of the men subjected to castration died from the procedure. It was performed without anesthesia in caravan stations along the road as a commercial decision. A castrated male servant commanded a higher price in certain markets.”

“Of an original group of 100 men who entered a castration center somewhere in the Congo basin. Historical reconstructions based on mortality data suggest that perhaps five or six survived long enough to reach Zanzibar. Five or six out of a 100. Those who survived left no descendants. Which is partly why today there is almost no visible African diaspora in the Arab world comparable to what exists in the Americas.”

“Not because the trade didn’t happen because the system was designed whether consciously or not to extract without leaving a trace. Let’s talk about the ones who fought back because they did. And the story of that resistance is one of the most extraordinary and most forgotten chapters in medieval history. The year is 869 AD.”

“The Abbasid Caliphate is at the height of its power. Baghdad is the largest city in the world outside of China. The canals of southern Iraq, the marshlands of Basra, are being drained and cultivated by enslaved labor on a scale that rivals anything in the ancient world. The workers are called the Zanj. That word in Arabic simply means people of East Africa.”

“They are draining salt flats, moving earth, standing in water and mud for hours under the Iraqi sun in conditions that contemporary Arabic chronicles describe as brutal even by the standards of the time. They sleep in camps. They are fed minimally. They have no legal standing, no recourse, no name in the record except the collective noun Zanj.”

“Then something shifts. A man named Ali Iban Muhammad arrives in the marshes. His origins are disputed. Some accounts say he was Arab. Others suggest mixed ancestry. What is not disputed is what he told the enslaved workers. He told them they deserved to be free. That was enough. What followed was not a riot. It was a revolution.”

“The Zanj rebellion lasted 14 years from 869 to 883 AD. At its peak, the rebels controlled a stretch of territory in southern Iraq, had built their own capital city and had defeated multiple Abbasid armies sent to crush them. Contemporary Arabic historian Al-Tabari, one of the most reliable sources of the period, documented the rebellion in detail, the battles, the numbers, the tactical decisions on both sides.”

“The rebels sacked Basra, one of the great cities of the medieval world. Al-Tabari records that the attack left the city devastated. Bodies in the streets. The Abbasid governor fled. For 14 years, enslaved people held territory against an empire they lost in the end. The Abbasid Caliph Al-Muaffaq crushed the rebellion in 883 AD, executing the remaining leadership.”

“Ali Ibn Muhammad was killed. His head was paraded through Baghdad. The Zanj were re-enslaved and the trade continued. But the rebellion left something behind that couldn’t be re-enslaved. A record. Because Al-Tabari wrote it down not to honor the rebels, but to document the threat. We know it happened. We know the names.”

“We know the dates. We know that somewhere in the marshes of 9th century Iraq, people who had been taken from East Africa in chains looked at each other and decided that dying in a fight was better than living on their knees. That is not a metaphor. That is documented history.”

“Now the British intervention by the 19th century the Arab slave trade was running at full capacity. The East African coast, Zanzibar, Mombasa, Kilwa was the commercial backbone of the entire system. Zanzibar’s Sultan Majid bin Said governed what was effectively a slave state, exporting tens of thousands of captives per year to the Persian Gulf, Oman, and beyond. Then the British Navy showed up. Not out of pure altruism, Britain had its own complicated history.”

“And the anti-slavery patrols in the Indian Ocean were partly strategic, partly economic, and partly the result of genuine abolitionist pressure back home. But whatever the motivation, the effect was real. Between 1860 and 1890, Royal Navy cruisers intercepted hundreds of slave dhows in the Indian Ocean.”

“Admiral George Sullivan’s memoir, ‘Dhow Chasing in Zanzibar Waters,’ published in 1873, is one of the most detailed primary source accounts of the trade in its final decades. Sullivan describes the conditions aboard intercepted vessels in language that is careful naval and devastating precisely because of its restraint. Captives found aboard dhows were taken to Aden or Bombay. Some were resettled.”

“Many died before reaching any port. In 1873, under British pressure, Sultan Barghash of Zanzibar signed a treaty formally abolishing the slave trade in his territories. The market in Stone Town closed, but closing a market doesn’t close a trade. The caravans kept moving inland away from the coast. The trans Saharan routes continued operating into the early 20th century.”

“Documented records from colonial French administrators in West Africa indicate slave caravans were still crossing the Sahara as late as 1910. 1910. That is not the distant past. That is within living memory of people who were alive in the 1980s. Here is the number historians argue about. Ronald Seagull estimated 14 million. Paul Lovejoy placed it at 11.5 million for the Trans Saharan route alone.”

“Patrick Manning’s demographic modeling pushed the total closer to 17 million across all routes, all centuries, between 10 and 18 million human beings. And none of those numbers count the ones who died on the march. The ones who fell in the desert and were left where they dropped.”

“There was no ledger for them. The bones in the Sahara don’t count. Why is this history so little known? Part of the answer is political. Part is academic and part is simply uncomfortable because the nations most directly connected to this trade are also the nations where the conversation has barely started.”

“There is no monument in Muscat or Riyadh that says this happened here for our benefit and we know it. The holding cells in Zanzibar still exist. Tourists visit them. Guides explain that people died in those rooms waiting to be sold and then the tourists leave. So what do you do with this? You remember it not as a weapon, not as a competition over which atrocity was worse.”

“The women who walked those desert routes deserve to be remembered. The men who built a rebellion in the marshes of Basra and held an empire at bay for 14 years deserve to have their names known. 13 centuries. Tens of millions of lives. The largest historical amnesia of the modern world. The desert kept the bones. Now you know what they.”