And you might read up on serfdom, a hallmark in European feudalism.
This is total nonsense. In modern times it's Christian, largely European nations where slavery has not flourished. Check the data for yourself. Slavery is alive and well in many parts of the world. In many cultures it's hardly even controversial.
https://www.washingtonpost.com/news/worldviews/wp/2013/10/17...
What serfdom has in common with slavery is the fact that industrialization killed off both of them. Industry required a large and moveable work force.
I am not insinuating that being a serf was enjoyable, but if I had to choose between serfdom and slavery, that would be no contest.
Serfdom is, of course, different from slavery. Thr main difference being that serfs could be sold like other mobilr assets as they were attached to the land. When thr land was sold, the serfs eere sold along with it so. The common theme between slavery and servedom so is that in both cases people were property of sorts.
Abolitionists were Christians, because they tried to abolish slavery in Christian nations. As much as Abolitionists used religious arguments against slavery, slavery advocates used religious argments for it.
Modern day de-facto slavery, in the Arab world and illegal varieties affecting immigrants for example, are different from historical slavery. As much different as Roman and Greek slavery was from Barbary state slavery and Colonial slavery.
One hallmark of the modern variety of slavery, the one European nations used to build their colonial empires on, is the racist nature of it. In ancient times race didn't play much of a role in slavery. Nor did religion in pre-Christian Rome. These two things set the Colonial / Christian form slavery apart from those ancient forms.
There wasn’t a law or practice of enslaving people based on their skin color. As evidenced by the free blacks in other areas of the world that weren’t enslaved.
I think the racial stereotypes came about based on the race of the slaves, not the other way around.
Hollywood, at least in the HBO production “Rome” did get this part right. The main character has blonde hair, which is a political liability.
As noted in another comment, Zanj is the Arab word for black. Kafir is the word for nonbeliever and use more broadly. I’ve not heard it used racially.
Just because that's all you know about doesn't mean that's all there was.
Slavery existed on all continents (except Australia I think?) long before the expansion of Christians started. Antic Mediterranean had slaves. Scandinavia nations had slaves. Mongolian and Chinese empires had slaves. North and South American native civilizations had slaves.
Also the Christian slave traders of 13th - 19th century cooperated heavily with Arabs and natives to run the slave raids for them. At the same time Ottoman Empire also used slaves, as well as kidnapping children to serve as soldiers, just it's far less known in the West as it didn't affect Westerners.