Can anyone recommend any books that go over slavery from a global perspective? I read Black Rednecks and White Liberals by Thomas Sowell earlier this year and he had a chapter about it but I wanted to do a deeper dive. I also remember someone sending me a link to a youtube video about it but I can't find it so if anyone has a good video please send me the link as well.

I recently had a discussion with someone and told them that slavery should be taught from a global perspective and he accused me of diminishing or trying to ignore American slavery. I told him that everyone is well aware of American slavery and the problem is that a lot of young people seem to think that it is something unique to America and not something that is as old as time. Also, he didn't believe me when I said it still goes on in parts of the world.