Okay, and I dont really need details but the point that I was going to make is that Europeans often struggle to understand the American slavery issue but they should not stuggle too hard if they know their own history. After all. the american experience with slavery all began under the British and Spanish colonists yes? The British ended slavery before the Americans did so they get points for that but it does not make erase the fact that they and the Muslim Arabs were the premier slave traders in the world for a long time. Unfortunately, one of those two groups is still at it. There is more slavery in this world today than at any time in history. So if by chance you are British, then the key to understanding american slavery would be understanding your own history and how it infected the new world. Slavery between native Americans was already here. And the massive enslavement of native americans by the Russians occurred before we owned Alaska but it is part of American history even though most Americans never think about it in the lower 48.
Canadians also had the same slavery involving native Americans but not so much with African slaves- mostly because they early history is more associated with France than Great Britain.
With such a subject, people are usually very factual.
I thought transatlantic slavery started with the Portuguese.
The Romanus Pontifex, a papal bull (1454 ) allowed Portugal King to enslave all the Muslim Sarrasins in North Africa. These were the first slaves brought to the "New World". Then it took off, and was extended to African people left in other African countries, when another papal bull forbid the enslavement of Native Americans, while slaves were needed to build the plantations.
Now, why Americans seem to be struggling with their slavery past? no idea