Avi, you’ve never heard of human trafficking? There are so many variations of human trafficking, not just of females. There is slave labor on the market everywhere! From India and China to right here in the USA under your nose. Just look up the stats from the FBI. And that’s just illegal slavery. There are dozens of countries which approve of unofficial forks of slavery. They just use loopholes, extortion, or merely call it a different name. Here are some: China (they enslave people outright), India, Pakistan, Saudi Arabia, UAE, EGYPT, and TURKEY. These countries approve of enslaving people. I’m not talking about indentured servitude. And there are so many others which turn a blind eye.
My point is there are massive numbers of slaves today which dwarf the number of slaves throughout all of human history. So have societies truly progressed past slavery when it has increased exponentially?