In March 2026, the United Nations passed a resolution declaring the transatlantic slave trade the gravest crime against humanity. The phrasing is sweeping and unequivocal, reflecting the immense suffering associated with the Atlantic system. Yet the certainty of this claim sits uneasily with the historical record. Once we step back and examine slavery across a wider span of time and geography, the picture becomes far more complicated, and less suited to simple hierarchies.
To begin with, the transatlantic slave trade was not an isolated phenomenon but one part of a much older and wider world of human trafficking. Long before European ships crossed the Atlantic, slave trades were operating across Africa, the Middle East, and Eurasia. The trans Saharan slave trade, for instance, stretched over a millennium, linking sub–Saharan Africa to North Africa and the Islamic world. The East African slave trade, in turn, connected inland regions to markets across the Indian Ocean. These systems were not minor or incidental. They were deeply embedded in regional economies and social structures, and in many cases lasted far longer than the Atlantic trade itself.
At this point, however, a crucial limitation emerges. Unlike the Atlantic system, which is relatively well documented, earlier and non-Atlantic trades often lack consistent quantitative data. Records are fragmentary, estimates vary widely, and entire regions remain understudied. This makes direct comparison extraordinarily difficult. In other words, declaring one slave system the "gravest crime" assumes a level of comparability that the evidence simply does not provide.
Even when we narrow our focus to the Atlantic world, the reality is more layered than it is often presented. There is no question that the Middle Passage was brutal and that mortality rates were high. Yet, over time, the trade adapted in ways that reflected its underlying economic logic. Enslaved individuals were treated as capital investments, and their survival mattered financially. As a result, conditions on slave ships became, to some extent, subject to regulation. By 1788, British legislation formalized practices that had already begun to emerge. The Dolben Act required the presence of a ship's surgeon, turning what had previously been an informal obligation into a legal one. It also introduced a system of financial incentives, rewarding captains and doctors when mortality rates fell below certain thresholds, with greater rewards for exceptionally low death rates. At the same time, traders became more selective in choosing captives for transport, favoring those deemed more likely to survive the voyage. None of this mitigates the moral horror of the trade, but it does show that the system evolved under economic and humanitarian pressures, rather than remaining static in its brutality.
If we widen the lens further, the uniqueness of the Atlantic system becomes even less clear. Consider, for example, the evidence from Eastern Central Europe in the sixth century BCE. Here, archaeological findings point to Scythian incursions that were not merely raids in the conventional sense but sustained campaigns of violence, enslavement, and demographic destruction. Entire regions were destabilized. The Silesian Oder Basin, which had strong cultural ties to the Central European Hallstatt world, was effectively emptied of population by the end of the sixth century BCE. This was not a temporary disruption but a profound demographic collapse. Similar patterns can be seen in the Western Carpathian Basin, where lowland regions in Transdanubia and Lower Austria experienced repeated attacks that led to drastic depopulation and cultural fragmentation. What emerges here is a system of organized slave raiding with consequences that were, at a regional level, just as devastating as those associated with later slave trades.
Moving forward in time, the Black Sea slave trade under the Crimean Khanate offers another striking point of comparison. In this case, slavery was not a peripheral activity but a central economic pillar. Trade in captives was one of the most important sources of income for the Khanate, shaping its military strategy and political economy. Raiding expeditions into neighboring territories such as Poland, Lithuania, and Russia were conducted with the explicit aim of capturing people for sale. The scale of these operations was enormous. Estimates suggest that around 10,000 captives were taken each year, amounting to roughly two million individuals between 1500 and 1700. This figure excludes the Caucasus, meaning the true total was likely even higher. What is particularly striking is that this places the Black Sea trade on a scale comparable to the Atlantic slave trade during a similar period, which also involved around two million people between the mid fifteenth and late sixteenth centuries.
The human impact of this system is difficult to overstate. Contemporary observers described slave markets in the Crimea as scenes of constant anguish. Families were separated, children were torn from parents, and individuals were sold amid cries, pleading, and despair. These were not isolated incidents but routine features of a system that operated continuously for centuries. The Lithuanian ambassador to the Crimea, Michalon Lituanus (Mikhail Litvin), for example, recounted the awful condition of his fellow countrymen, having personally witnessed their sale in the market of Caffe. Indeed, the volume of captives was so large that some observers remarked on the seemingly endless supply of human beings being brought into the region.
At the same time, the structure of this trade reveals another important pattern. It was not driven by a single group but by a network of participants. … communities in the Crimea, both Karaite and Rabbanite, were involved in various aspects of the system. Documentary evidence points to their roles as merchants, intermediaries, and officials, including positions within customs administration. This reflects a broader reality of slave systems across history. They were rarely confined to one society or one set of actors. Instead, they were embedded in wider economic networks that drew in diverse participants, each contributing to the functioning of the trade.
Taken together, these examples complicate any attempt to single out the transatlantic slave trade as uniquely the greatest crime against humanity. This is not to diminish its scale or brutality. Rather, it is to recognize that other systems, often less studied and less discussed, produced comparable levels of suffering and, in some cases, operated over longer periods or across equally vast regions.
What, then, explains the prominence of the Atlantic trade in modern discourse? Part of the answer lies in the nature of the historical record itself. From an early stage, abolitionists undertook detailed investigations into the slave trade, documenting its practices, its human toll, and its economic structure with remarkable thoroughness. Their efforts generated a large body of empirical material, from ship records to mortality data, which has shaped how historians understand the trade ever since. In contrast, earlier and non-Atlantic systems were rarely subjected to the same level of systematic scrutiny, leaving significant gaps in the evidence.
At the same time, contemporary narratives also play a role. The Atlantic slave trade involved European powers and African populations, and its legacy is often interpreted through a framework that emphasizes inequality between regions. Africa today remains the world's poorest continent, and this reality reinforces a narrative in which historical exploitation is seen as a key explanatory factor. By contrast, other populations that experienced large-scale enslavement in the past, including many European groups targeted in systems such as the Black Sea trade, do not fit as easily into this framework. As a result, the Atlantic system occupies a more prominent place in modern discussions of historical injustice.
If the goal is to understand slavery as a historical phenomenon, then a broader approach is essential. This means paying attention not only to the Atlantic world but also to less familiar systems, from ancient Eurasian slave raids to early modern trafficking networks in the Black Sea. It means acknowledging the limits of our data and resisting the urge to impose simple rankings on complex historical realities.
The 2026 United Nations resolution reflects a politically correct framing of history, shaped less by balanced scholarship and more by a desire to reinforce a familiar oppressor narrative that places disproportionate moral blame on Western societies. Such portrayals often function to shame Western audiences rather than to encourage a genuinely comprehensive understanding of the issue. A more serious and constructive approach would move beyond selective moralizing and instead direct attention toward the persistence of slavery in the modern world—particularly in parts of Africa—where it continues to exist in various forms and demands urgent global scrutiny.