The last book I read by Sowell had a chapter about the slave trade in different parts of the world. Ottomans were very cruel. He was saying how it would be beneficial to teach slavery from a global perspective. I agree because I think it’s sad and disturbing how many American youth think that slavery was invented in the U.S. and with all these “activists” in the west you notice none of them do anything to help actual slaves or sex trafficking victims today.