It's the same principle as domestication of animals, except applied to human beings. It's not something deep and profound.

>>1115249
>I am ugg.
>I captured the tribe of Zugg. Killed a few of them inna fight and bitched the rest.
>Man what do I do with the rest.
>Meh, Put em to work.

Alternatively, in ancient tribal systems, there's debt-slavery. Basically if you failed to repay a debt, you worked for the guy you owed shit to.

>>1115268
>in ancient tribal systems, there's debt-slavery. Basically if you failed to repay a debt, you worked for the guy you owed shit to.
Sounds reasonable, desu.

>>1115268
I imagine slavery predates debt-slavery.Sex slavery was surely around before barter was complex enough for debts.

We have a huge propensity for sorting things into us and them groupings. The 'them' often gets the short end of the stick.

working sucks so it's really nice to have people work for you instead

Actually, it's pure natural selection. Even in animal societies, you have a hierarchy. The best members of a society are placed higher in the hierarchy, while the weakest are placed lower (i.e. slaves).

>>1115249

them: please dont kill me.. ill wash your socks and suck your dick.

us: hmm.. ok.

>>1115249
Yeah, here.
https://archive.org/details/outlinesofhisto00cond

>uga bugga kill rival tribemen
>now we take womyn and children
>wut do with them
>???
>PROFIT