The History Being Left Out of the Slavery Debate

A widely shared video in which a Black American man says he would trust a Muslim before any Christian because Christians enslaved his ancestors rests on a historical omission so large that it changes the argument. The transatlantic slave trade was a catastrophe, but it was not the only organised traffic in African lives: eastern routes across the Sahara, the Red Sea and the Indian Ocean operated for centuries, carried millions of people and continued into the modern era.

The point is not to replace one accusatory slogan with another. Nor is it to pretend that Christianity, Europe or the Atlantic powers bear no responsibility for the crimes committed in their name. The point is more basic and more uncomfortable: a faith, a civilisation or a race cannot be judged by a selective ledger. Once the missing history is restored, the claim that Islam offers a morally clean alternative to Christianity because Muslims never enslaved Africans collapses.

A Viral Moral Argument Built on a Missing Chapter

The appeal of the argument is easy to understand. A Black American confronting the history of the United States is confronting a real inheritance: kidnapping, forced transport, plantation labour, family separation, racial law and a political order that defended human ownership for generations. Christianity was woven into that society. Slaveholders quoted scripture. Churches defended slavery. Politicians invoked Christian civilisation while treating millions of people as property. The wound is not imaginary, and neither is the anger that it produces.

But anger does not turn an incomplete account into a complete one. The leap from “Christian societies enslaved my ancestors” to “Muslim societies did not” is not an act of historical reasoning. It is a moral verdict issued before the evidence has been heard. The fact that one atrocity is well known does not make another irrelevant, and the fact that a person’s ancestors were caught in one system does not make the operators of a different system innocent.

That distinction matters because the argument is no longer confined to private reflection. It circulates through short videos, comment sections, speeches and religious apologetics. It presents conversion as an act of historical escape: leave Christianity, identified with white America and the slaveholder, and enter Islam, identified with Arabs and Africans who supposedly stood outside the crime. That story offers emotional clarity. It also offers a false bargain. It asks a person to exchange a serious spiritual question for a racialised account of the past that cannot survive inspection.

The language used to describe the eastern trades requires care. “Arab-Muslim slave trade” is a common shorthand, but it compresses several overlapping systems into one label. The routes involved Arab merchants, African rulers and brokers, Persian and Ottoman authorities, local raiders, Indian Ocean traders and consumers across a vast Muslim world. Not every Muslim was a slave trader, just as not every Christian was a slaveholder. The proper subject is not the guilt of a biological or religious population. It is the record of institutions, markets, states and individuals that treated human beings as movable property.

That record is not a footnote to the Atlantic story. Encyclopaedia Britannica’s historical survey says that about 18 million Africans were delivered into the Islamic trans-Saharan and Indian Ocean trades between 650 and 1905. ¹ The estimate is not a licence for crude comparisons, because the trades differed in geography, purpose, mortality and social organisation. It is, however, enough to disprove the claim that Arab and Muslim societies had no role in enslaving Africans.

The Eastern Trades Were Not One Route but a System

The geography explains why this history is so easy to miss. The Atlantic trade has a visible shape: West African ports, European ships, the Middle Passage and plantation societies in the Americas. The eastern trades were more dispersed. Captives were driven north through the Sahara, carried across the Red Sea, shipped from the East African coast and moved through ports around the Indian Ocean. Some went to North Africa. Others were taken to Egypt, Arabia, Iraq, Iran, Central Asia, the Ottoman territories or the Indian subcontinent. The map is larger and the archive is more fragmented.

There was no single eastern company whose records could later be assembled into a neat institutional history. Different kingdoms, cities, tribal networks and commercial houses participated at different times. The trade changed as political power shifted. A caravan route might be controlled by one dynasty in one century and a rival authority in the next. Zanzibar became a major entrepôt for the East African trade, linking the mainland to Arabia and the wider Indian Ocean world. Across the Sahara, the desert itself was both a barrier and a killing mechanism.

That terrain imposed costs that rarely appear in the clean arithmetic of a shipping ledger. A caravan could spend months crossing the desert. Captives faced thirst, disease, exhaustion and violence before reaching a market. The journey did not end at the point of sale. Enslaved people were then distributed into domestic service, agricultural labour, military households, sexual exploitation, courtly establishments and religious or political institutions. Some became soldiers or officials. Others disappeared into households where their names, languages and family connections were deliberately severed.

The trade’s longevity is the fact that most unsettles the modern argument. European expansion across the Atlantic began centuries after eastern routes were established. The Atlantic system lasted for roughly four centuries; the eastern networks operated, in changing forms, for more than a millennium. That does not automatically make the eastern trades “worse” in every measurable sense. Duration is not a substitute for analysis. A system that kills more people in a shorter period may be more destructive than one that lasts longer. But duration makes nonsense of the idea that the history of African enslavement begins with European ships.

Slavery was also not confined to one religious tradition. Britannica’s survey places slavery in societies across Africa, Asia, Europe and the Middle East, and notes that Black Africans were widely traded throughout the Islamic world. It also records that African societies captured and owned slaves before and after the rise of Islam. ¹ That is not an argument for spreading blame so widely that no one is accountable. It is an argument for refusing a history in which one group is always the buyer, another is always the victim and a favoured group is always absent.

Why the Numbers Are Large and Still Uncertain

Debates about slave-trade figures often become contests of political loyalty. One side produces a number to minimise European responsibility; the other treats any discussion of eastern slavery as an attempt to minimise the Atlantic crime. Both reactions are intellectually lazy. The correct response to uncertainty is not to discard the evidence. It is to explain why the figures vary and what can still be known with confidence.

The Atlantic trade is unusually measurable because it left an immense documentary trail. Ships had names. Merchants kept accounts. Ports recorded departures and arrivals. Insurance companies, customs officials, plantation owners and colonial administrations created paperwork. The SlaveVoyages project has built an extensive database of voyages and the people carried on them, giving historians a way to examine the trade ship by ship and route by route. ² The database does not make the Atlantic story simple, but it makes many of its proportions unusually difficult to deny.

The eastern trades left a less unified archive. Records were produced in several languages and under many political authorities. Some were lost. Some were never created. Some described tax payments, military campaigns or household transactions without recording the human cost in a form modern researchers can easily count. Researchers must work with travel accounts, legal texts, chronicles, inscriptions, port records, linguistic evidence, oral histories and demographic patterns. Each source illuminates one part of the system while leaving another in shadow.

That is why responsible historians give ranges rather than pretending to know the unknowable. Britannica’s estimate of about 18 million Africans delivered into Islamic trans-Saharan and Indian Ocean trades between 650 and 1905 is a major figure, but it is not a precise census. It should be read as an estimate of a large historical process, not as a magic number that settles every comparison. The absence of a final number does not turn millions of documented journeys into speculation.

There is a second problem with numerical comparisons: people were not subjected to identical forms of enslavement. The Atlantic plantation economies developed a racialised, hereditary system in which enslaved status was transmitted through the mother and freedom was made difficult or impossible. Eastern systems varied more widely. Some enslaved people were absorbed into households, armies or courts. Others worked in agriculture, mines or construction. Women and children were often targeted for domestic and sexual exploitation. Men could be used as labourers, soldiers or eunuchs. The categories overlap, and the human consequences cannot be reduced to a single ranking.

Still, the differences should sharpen the comparison, not prevent it. A historian can say at once that Atlantic slavery was distinctive, that the eastern trades were also vast, and that neither fact excuses the other. The public need not choose between two partial truths. It can learn the whole subject.

The Human Cost Was Written Into the Trade

Slave systems do not merely take labour. They attack the conditions under which a people can reproduce its family life, preserve its culture and appear in the historical record. The eastern trades were shaped by demands that made the social consequences different from those of the Atlantic plantation world. In many places, the market valued women for domestic and sexual service and men for military or household roles. Captives were often removed from their communities without any intention of creating a self-sustaining population in the destination society.

The fate of enslaved men who were castrated is central to understanding the demographic silence around the trade. Eunuchs were used in courts, harems and elite households, where their perceived inability to father children was treated as a feature. The operations were dangerous, and many did not survive. Those who did survive could not establish descendants in the ordinary way. A system that repeatedly removes men from reproductive life leaves fewer visible family lines even when the number of people taken is large.

Women faced a different form of disappearance. Those absorbed into households could bear children whose legal and social identity followed the father or the owner’s family. Their descendants might become part of the wider population within a generation, while the women themselves vanished from the public record as individuals. That process does not mean their lives were painless or that assimilation was freedom. It means that the demographic evidence of enslavement can be muted even when the institution was extensive.

The comparison with the Americas is therefore misleading if it asks only where the descendants are today. The Black populations of the United States, Brazil and the Caribbean are a visible consequence of the Atlantic system because millions survived, reproduced and formed communities under slavery and after emancipation. The absence of an equally large, clearly defined diaspora in many eastern societies cannot be read as evidence that fewer people were taken. In some cases, it is evidence of what the system did to family formation.

That difference also shaped memory. Descendant communities preserve names, songs, churches, political movements, family stories and claims for redress. They create institutions capable of forcing the history into national debate. Where enslavement dissolved people into households, killed them on the journey or prevented them from having children, the descendants have less power to make the past visible. One history speaks through organised communities. The other is often encountered only through scattered records and the occasional historian willing to reconstruct it.

The result is not merely an academic imbalance. Historical visibility affects moral intuition. People tend to recognise a crime when they can see its victims and descendants. They find it easier to remember a ship, a plantation and a family tree than a caravan, a market and a severed lineage. The eastern trade’s demographic silence has helped produce the mistaken impression that it was either small or nonexistent.

The Zanj Revolt Shows What the Records Conceal

One of the clearest reminders that enslaved Africans were present in large numbers in the Islamic world is the Zanj rebellion in southern Iraq. Beginning in 869, East African slaves working in the salt marshes near Basra revolted against the Abbasid caliphate. They had been brought to the region for punishing agricultural labour, were given minimal subsistence and were treated as a disposable workforce. Britannica records that the revolt lasted until 883 and became a major military challenge to the Abbasid state. ³

The scale of the uprising matters. This was not a small household dispute that later historians inflated into a symbol. Slave work crews could number in the hundreds or thousands. The rebels captured territory, established a fortified capital and defeated government forces. They took the port of al-Ubullah, disrupted communications and sacked Basra in 871. The Abbasid government required years of campaigning to destroy the revolt, finally retaking the rebels’ stronghold in 883.

A slave rebellion of that duration reveals several things at once. It shows that the labour system was extensive enough to sustain a mass movement. It shows that the enslaved were not passive recipients of suffering but political actors capable of organisation and military resistance. It also shows why the eastern story cannot be reduced to a picture of isolated domestic servants. Enslaved Africans were used in productive systems that mattered to the power and wealth of states.

The Zanj were not the only enslaved people in the Abbasid world, and the revolt should not be turned into a convenient symbol of all eastern slavery. Its leaders, composition and religious language were specific to the political crisis of ninth-century Iraq. Yet the episode punctures the clean historical fiction that Islam and the enslavement of Africans occupied separate worlds. The revolt took place inside a Muslim empire, against landowners and authorities who depended on enslaved African labour.

The episode is also useful because it makes the enslaved visible as people with agency. Discussions of slavery often treat victims as a number in a shipment or an entry in an account book. The Zanj fought, negotiated, governed territory and forced an empire to reorganise its military effort. Their defeat did not erase the fact that they had created a political community under conditions designed to deny them one.

That story deserves a place beside the better-known revolts in the Atlantic world. It should be taught not as a weapon against Muslims, but as evidence against historical amnesia. A society that remembers Spartacus, Nat Turner or the Haitian Revolution while ignoring the Zanj rebellion is not simply selecting different examples. It is teaching a geography of suffering in which some victims are made central and others remain peripheral.

The Atlantic Crime Remains Fully Accountable

Restoring the eastern history does not reduce the responsibility of European and American societies for the Atlantic trade. The temptation to make the argument reciprocal is strong: if Muslims enslaved Africans, perhaps Christians did not do anything uniquely wrong. That is not what the evidence says. The Atlantic system was a vast and brutal enterprise, and its political, economic and racial consequences remain embedded in the modern Americas.

European merchants and states developed the shipping, financing and imperial structures that carried millions of Africans across the Atlantic. American colonists and later national governments built plantation economies around coerced labour. Sugar, tobacco, rice and cotton were not simply products of an abstract market; their production depended on people who could be bought, sold, punished and separated from their families. Christian institutions often supplied moral language for the system, and Christian communities were also among the forces that resisted it. The record contains both complicity and opposition.

The Atlantic trade also created a particularly durable racial order. In the Americas, African ancestry became a legal and social marker of presumed enslavability. The colour line was written into colonial statutes, property law, marriage rules and citizenship. Emancipation did not erase those structures. They influenced segregation, policing, land ownership, education and political power long after abolition. A discussion of eastern slavery cannot make those consequences disappear.

Nor should the eastern trade be used to dismiss the demand for historical knowledge about the Atlantic. The United States, Britain, France, Portugal, Spain and other Atlantic powers left records and monuments that are still visible. Their governments and commercial institutions benefited from the trade. Their descendants continue to live in societies shaped by its profits. The argument for honest history is not that every society should be assigned the same guilt. It is that every society should be required to face its own record.

There is a difference between comparison and evasion. Comparison asks how systems worked, who profited, how people resisted and what legacies survived. Evasion asks whether another group was also guilty, as if the discovery of a second crime cancels the first. A serious newspaper article, classroom or religious debate should prefer the first approach. The historical ledger is not a courtroom in which one conviction acquits everyone else.

The Atlantic record is also better documented in part because modern institutions have chosen to document it. The SlaveVoyages database gives the public an accessible way to study the routes and scale of the trade. That archive has made the Atlantic story more difficult to deny, while the older eastern systems remain less visible. The answer to that asymmetry is not to attack the Atlantic archive. It is to build and teach better accounts of the other routes.

Modern Evidence Makes the “Ancient History” Defence Fail

The most damaging version of the selective narrative treats eastern slavery as a remote medieval matter, safely sealed away from the present. That defence does not survive the evidence of modern trafficking. In 2017, CNN investigated reports that migrants in Libya were being sold at auctions. Its reporters verified footage and filmed a dozen people being offered to buyers near Tripoli in a matter of minutes. The men were presented as labourers, prices were called out and the buyers took them away. ⁴

The CNN report described migrants who had paid smugglers to cross Libya on the way to Europe. When routes became more difficult and boats stopped moving, migrants could become a source of profit in another way. Those who ran out of money were forced into labour, sold and sometimes sold again. Families were threatened for ransom. One young Nigerian migrant told CNN that he had been beaten, held in miserable conditions and sold as a day labourer.

The report did not establish that every Libyan, Arab or Muslim person participated in the auctions. It established something narrower and more important: slavery-like exploitation was operating in a North African society in the twenty-first century, and people from sub-Saharan Africa were being treated as commodities. The footage made it impossible to pretend that the historical vocabulary of buying and selling human beings belonged only to the past or only to the Atlantic world.

Modern trafficking is not identical to hereditary chattel slavery. A migrant sold by smugglers may be held for weeks rather than a lifetime. A worker in forced labour may have a legal identity that an enslaved plantation worker was denied. Those distinctions matter for law and policy. They do not matter to the person whose wages are confiscated, whose movements are controlled, whose family is threatened and whose body is transferred for money.

The Libyan case also demonstrates how political disorder revives old commercial forms. When the state loses control of territory, borders become sources of income and migrants become vulnerable to armed groups, smugglers and corrupt officials. The language of modernity does not protect people from ancient practices. A passport, a phone and a route to Europe offer little protection when another person controls the border, the money and the threat of violence.

The proper response is not to declare a civilisation uniquely barbaric. It is to identify the institutions that permit coercion and hold their operators accountable. That same standard must be applied in Libya, the Gulf, the Mediterranean, the Americas and anywhere else people are bought, held or forced to work.

The Kafala System Exposes the Difference Between Reform and Freedom

The Gulf’s kafala system provides another reason to reject the claim that the eastern record is merely ancient history. The system ties migrant workers’ residence and employment to a local sponsor, usually an employer. The Council on Foreign Relations says that in Gulf states and other countries using kafala, sponsors have held extensive control over workers’ employment and immigration status. ⁵

That legal arrangement creates a power imbalance with obvious consequences. If a worker cannot freely change jobs, leave the country or preserve legal status without the sponsor’s cooperation, the employer possesses more than the ordinary power to hire and fire. The worker’s ability to escape abuse is placed in the hands of the person who may be committing it. Recruitment debts, withheld wages, contract substitution, confiscated documents and overcrowded housing can turn a promise of employment into a system of coercion.

The workers are not a single category. They include people from South Asia, East Africa, Southeast Asia and other regions. Some are construction workers. Some are drivers, cleaners, security guards or service workers. Domestic workers, many of them women, face the added danger of living inside the employer’s home, where witnesses are scarce and the line between employment and captivity can disappear.

There have been reforms. Qatar introduced measures allowing workers more freedom to change jobs and leave the country, established wage protections and created a minimum wage framework. The Council on Foreign Relations notes that such reforms have been important but uneven, and that enforcement remains the decisive question. ⁵ A law that exists on paper but cannot be used by a worker facing an abusive sponsor is not the same as a right that can be exercised.

Human Rights Watch has continued to document unpaid wages, recruitment abuses, difficulties changing jobs and unexplained migrant-worker deaths in Qatar after the 2022 World Cup. It reported that workers could remain in the country despite unpaid wages because leaving might mean losing what they were owed. ⁶ Again, this should not be treated as proof that every Qatari or every Muslim supports exploitation. It is evidence that a wealthy modern state can preserve labour arrangements that leave foreign workers dangerously dependent on employers.

That is the lesson the viral argument refuses to learn. Religion does not function as a moral disinfectant. A society does not become incapable of exploitation because its public language is Islamic, Christian, secular or humanitarian. Institutions must be judged by what they permit and what they punish. Individuals must be judged by what they do. Anything else is branding.

Selective Memory Turns Victims Into Political Property

Why does one history become compulsory knowledge while another remains obscure? Part of the answer is power. The Atlantic world contains large descendant populations with the education systems, publishing industries, museums, political organisations and media platforms to keep the subject in public view. The descendants of the eastern trades are dispersed across many societies, and the people who were taken often left no clear lineage in the destination countries.

Part of the answer is also moral convenience. A selective history allows movements to present one community as the permanent victim and another as the permanent perpetrator. It provides an easy vocabulary for political mobilisation: Christian means slaveholder, Muslim means liberator; European means buyer, African means victim; Arab means outsider to the story. Real history is less useful to people who need simple categories.

The simplification is especially tempting in a religious debate. A person who has been taught to connect Christianity with slavery may be searching for a faith that does not appear contaminated by the past. But no major religion can pass that test if the test is whether its adherents have ever owned slaves, defended coercion or benefited from unjust institutions. Christianity has a record of slaveholding and abolitionist resistance. Islam has a record of slaveholding, legal regulation, manumission, resistance and continued exploitation. The relevant question is not which tradition has a spotless institutional history. None does.

That does not make all religious claims equally true or false. Theology should be argued through theology, not through a contest to discover which population has committed fewer historical crimes. A person may convert to Islam because of its account of God, revelation, worship, discipline or community. Another may remain Christian because of convictions about Jesus, grace, scripture or the church. Those are serious reasons. “My ancestors were not enslaved by people from that religious tradition” is not a serious account of religious truth, especially when the historical premise is wrong.

Selective memory also harms the people it claims to defend. Black Africans and their descendants were not merely objects in the Atlantic trade. African rulers, merchants and communities participated in the capture and sale of people, sometimes under pressure from external markets and sometimes for their own political gain. To omit that agency is not to honour Africans. It is to deny them the full complexity of historical actors, capable of resistance, collaboration, survival, cruelty and statecraft like everyone else.

The same principle applies to Arabs and Muslims. Treating all Muslims as slave traders is as crude as treating all Christians as slaveholders. Most people living under a civilisation do not control its institutions, and many resist them. The burden of history falls on particular rulers, merchants, employers and movements, not on every person who shares a broad identity with them. Historical honesty should make collective hatred harder, not easier.

The Standard Should Be Individual Judgment

The man in the video is entitled to question Christianity. He is entitled to distrust churches, reject doctrines and protest the way Christian language was used by slaveholders. What he is not entitled to do, if he wants his argument to be taken seriously, is turn one group’s crime into another group’s innocence without checking the record. The question is not whether his grievance is legitimate. It is whether his explanation is true.

There is a difference between recognising historical patterns and judging strangers by inherited categories. A person may reasonably ask how a religious tradition handled slavery, whether its scriptures were used to defend ownership, whether its leaders opposed abolition and what its institutions do today. That is an examination of doctrine and institutions. It becomes something else when it says a Muslim is trustworthy because Muslims never enslaved Africans, or that a Christian is untrustworthy because Christians did.

Trust is earned by conduct. The individual Muslim who protects a neighbour, keeps a promise and rejects racial hatred deserves trust for those reasons. The individual Christian who does the same deserves it for the same reasons. The reverse is also true. A person who excuses forced labour, trafficking or racial contempt cannot be rescued by a religious label. The moral content is in the action, not the badge.

The full history makes this conclusion unavoidable. African people were enslaved across multiple regions and over many centuries. Muslim societies participated in eastern trades that moved millions of Africans. Christian societies built and defended the Atlantic plantation order. African authorities and merchants participated in supplying captives. Modern governments and employers still permit forms of coercion that human-rights investigators compare with slavery. None of these facts cancels another. Together they show why racial and religious innocence is a dangerous fiction.

A serious education should therefore do more than add one paragraph about the Sahara to a textbook dominated by the Atlantic. It should teach how different systems operated, who profited, how enslaved people resisted, why some descendants are visible and others are not, and how modern trafficking connects to older patterns of dependency. It should also teach students to distinguish a historical explanation from a political slogan.

The past is not a menu from which each movement may select the crimes that serve its purpose. The Atlantic slave trade must remain central to the history of the modern West. The eastern trades must be brought out of the shadows. Contemporary trafficking must be confronted without euphemism. And religious choices should be made on grounds that do not collapse when the missing chapter is opened.

References

1. Encyclopaedia Britannica, “Slavery: Historical Survey.” https://www.britannica.com/topic/slavery-sociology/Historical-survey ↩ ↩
2. SlaveVoyages, Trans-Atlantic Slave Trade Database. https://www.slavevoyages.org/ ↩
3. Encyclopaedia Britannica, “Zanj Rebellion.” https://www.britannica.com/event/Zanj-rebellion ↩
4. Nima Elbagir, Raja Razek, Alex Platt and Bryony Jones, CNN, “People for Sale: Where Lives Are Auctioned for $400,” 14 November 2017. https://www.cnn.com/2017/11/14/africa/libya-migrant-auctions ↩
5. Kali Robinson, Council on Foreign Relations, “What Is the Kafala System?” updated 18 November 2022. https://www.cfr.org/backgrounders/what-kafala-system ↩ ↩
6. Human Rights Watch, “World Report 2024: Rights Trends in Qatar,” 20 December 2023. https://www.hrw.org/world-report/2024/country-chapters/qatar ↩