Hello, it was to answer a point in another topic, but my answer would have been totally off-topic, so I open a new one : (@Le Chef) Fight against slavery didn't began in the 18th century, in fact, christianism always fought slavery : In 325 Constantin forbid to sell a family in a separate ways In 524, the council of Lyons try to forbid to put in slavery free people. Under the normans, slavery will disappear from England without any formal laws applying it. In 1315, the king of France Louis X le hutin forbid slavery in France : Along the law of nature, "everyone should born frank" and it became "the soil of France make people free". In 1435, the pope will publish a papal bull punishing by excommunication.. https://en.wikipedia.org/wiki/Sicut_Dudum In 1537, Sublimis Deus claim that native american are human and not beasts as some conquistador pretended, and they should be free. https://en.wikipedia.org/wiki/Sublimis_Deus After middle age, they weren't any slave anymore, on the core european ground. I didn't found that back, but for the part I know the best, in France, slave presency were barely tolerated and limited to colonies. It's both awfull and wonderfull. Why awfull ? Because it would make slavery in colonies often particulary violent. Why it's wonderfull ? Because the philosophers of the enlightement grew up in slave-free societies, validing the fact that slavery wasn't something normal; I see the abolishment of slavery in the 19th centuries as inheritor of those early (christian) fight.