So you missed the part where they gave the proper definition?
In addition to its own evils during its own time, slavery has generated fallacies that endure into our time, confusing many issues today. The distinguished historian Daniel J. Boorstin said something that was well known to many scholars, but utterly unknown to many among the general public, when he pointed out that, with the mass transportation of Africans in bondage to the Western Hemisphere, "Now for the first time in Western history, the status of slave coincided with a difference of race."
For centuries before, Europeans had enslaved other Europeans, Asians had enslaved other Asians and Africans had enslaved other Africans. Only in the modern era was there both the wealth and the technology to organize the mass transportation of people across an ocean, either as slaves or as free immigrants. Nor were Europeans the only ones to transport masses of enslaved human beings from one continent to another. North Africa's Barbary Coast pirates alone captured and enslaved at least a million Europeans from 1500 to 1800, carrying more Europeans into bondage in North Africa than there were Africans brought in bondage to the United States and the American colonies from which it was formed. Moreover, Europeans were still being bought and sold in the slave markets of the Islamic world, decades after blacks were freed in the United States.
Slavery was a virtually universal institution in countries around the world and for thousands of years of recorded history. Indeed, archaeological evidence suggests that human beings learned to enslave other human beings before they learned to write. One of the many fallacies about slavery— that it was based on race— is sustained by the simple but pervasive practice of focussing exclusively on the enslavement of Africans by Europeans, as if this were something unique, rather than part of a much larger worldwide human tragedy. Racism grew out of African slavery, especially in the United States, but slavery preceded racism by thousands of years. Europeans enslaved other Europeans for centuries before the first African was brought in bondage to the Western Hemisphere.
The brutal reality is that vulnerable people were usually taken advantage of wherever it was feasible to take advantage of them, regardless of what race or color they were. The rise of nation states put armies and navies around some people but it was not equally possible to establish nation states in all parts of the world, partly because of geography. Where large populations had no army or navy to protect them, they fell prey to enslavers, whether in Africa, Asia or along unguarded stretches of European coastlines where Barbary pirates made raids, usually around the Mediterranean but sometimes as far away as England or Iceland. The enormous concentration of writings and of the media in general on slavery in the Western Hemisphere, or in the United States in particular, creates a false picture which makes it difficult to understand even the history of slavery in the United States.
While slavery was readily accepted as a fact of life all around the world for centuries on end, there was never a time when slavery could get that kind of universal acceptance in the United States, founded on a principle of freedom, with which slavery was in such obvious and irreconcilable contradiction. Slavery was under ideological attack from the first draft of the Declaration of Independence and a number of Northern states banned slavery in the years immediately following independence. Even in the South, the ideology of freedom was not wholly without effect, as tens of thousands of slaves were voluntarily set free after Americans gained their own freedom from England.
Most Southern slaveowners, however, were determined to hold on to their slaves and, for that, some defense was necessary against the ideology of freedom and the widespread criticisms of slavery that were its corollary. Racism became that defense. Such a defense was unnecessary in unfree societies, such as that of Brazil, which imported more slaves than the United States but developed no such virulent levels of racism as that of the American South. Outside Western civilization, no defense of slavery was necessary, as non-Western societies saw nothing wrong with it. Nor was there any serious challenge to slavery in Western civilization prior to the eighteenth century.
Racism became a justification of slavery in a society where it could not be justified otherwise— and centuries of racism did not suddenly vanish with the abolition of the slavery that gave rise to it. But the direction of causation was the direct opposite of what is assumed by those who depict the enslavement of Africans as being a result of racism. Nevertheless, racism became one of the enduring legacies of slavery. How much of it continues to endure and in what strength today is something that can be examined and debated. But many other things that are considered to be legacies of slavery can be tested empirically, rather than being accepted as foregone conclusions.
Mr. Sowell,
Economic Facts and Fallacies