What contributions to modern slavery were made by the Greeks, Romans, Bible, and Muslim Arabs?
Modern slavery was a collective combination of all of the worst aspects of slavery throughout history. The Greeks were among the first to consider otherness a characteristic of slaves. Most Greek slaves were barbarians and their inability to speak Greek kept them from talking back to their masters, and it also indicated their slave status. Aristotle said, "it is clear that there are certain people who are free and certain people who are slaves by nature, and it is both to their advantage, and just, for them to be slaves." The Greeks popularized the idea that slaves should be traded from far away.
Slaves made up 30 percent of the total Roman population. The romans also invented the plantation, using mass numbers of slaves to work the land on giant farms called latifundia.
The Bible was widely used to justify slavery. In particular the enslavement of Africans, because if the moment in Genesis when Noah curses Ham. The quote reads, "Cursed be Canaan, the lowest of slaves shall he be to his brothers." This encapsulates that slavery can be a hereditary status passed down. Next that slavery is a result of human sin.
Muslim Arabs were the first to import large numbers of Bantu speaking Africans to their territory as slaves. The Muslims called these Africans Zanj and they were a distinct and despised group.