Well, to some extent it still does. Parts of Africa and the far East still have pockets where people are kept under slave-like conditions. It might be abolished by law, but if there's enough money to be made people will still find a way to continue doing it. There's also human trafficking, and illegal immigrants. They tend to get where they want to go by indebting themselves to the smugglers. The system is set up in such a way that they're practically slaves for several years if not more. Being illegals the can't turn to the police for protection, so something very much like slavery keeps on going. For the rest of us, well we simply decided that slavery was immoral and gave it up.
greed
slavely
Opposing tribes would capture them.
the better question is..... why DONT we exist
you dont they dont exist.
then we dont exist
you dont, they dont exist
they dont............... CUZ THEY DONT EXIST
they dont exist
slaves begin with black people cuz white people didint like them and they were force to work.
you dont. BECAUSE THEY DONT EXIST!
no no