Obsession with slavery is a modern bias??? Are you familiar with something called the civil war lol
My point exactly.
When someone say 'slavery' (and no, it didn't occour to me the connection with the slav etnicity, though i well know that the rus traders used to enslave slavs among others, because when i think about slavery the word in my mind is 'schiavitù', i'm italian. It also has the slav root in it, but not so evident) they immediately restrict it to that nasty business with strong racial bases that happened in united states of america in the 19th century. Oh, and by the way, american civil war had a lot less to do with slavery and much more to do with the preferred model of economic development of the nation than school history wants people to think.
Slavery in general is a way broader phenomenon, which, in general, is by no mean connected with racism. Consider the medieval instituition of servitude, which was a de facto form of slavery, since a farmer in servitude condition had no liberty to leave the territory he was obliged to farm for his lord nor he could refuse to farm it and to perform other side jobs on request. It had no racial foundation at all. Serves where of the same people of lords and they might well have been former free men who fell in an economic crash. Like, for exemple, it happened in mesopotamian societies, where you could have been sold as slave as a mean of compensation for a debt you weren't able to repay. And since, by then, you had no mean to substain yourself and your owner was compelled and interested into taking some degree of care or you, that form of slavery had also a social value.
My point, by the way, is that slavery was not just something evil white men did to black people, the case because of it is a taboo word in modern culture. It has been there from the down of time and still happens today, since it's been estimated that today there are about 40 million slaves in the world, all in very non white countries, datas available upon browsing.