maybe it isn’t, the more questions I ask the more I realize that I don’t actually know very much about this.

that’s very interesting, now I want to learn more about The Inca empire

I was referring to slavery as a necessary step during antiquity only, more recent slavery I don’t believe to have been inevitable at all.

It makes sense to me that some form of forced labor would be necessary since it is the simplest way to organize labor. But yeah, I suppose different ways to organize labor could have formed instead, although it seems unlikely to me.