@Zergio200ism the term of slaves is fully depended on the law of county/world.
and the state allows slavery.
slavery are commonly 2 types. debt slaves and criminal slaves.
1 is a punishment. the other is when someone can no longer support them self.
being able to put on conditions might be a rule of sort.
slaves are in fact a product. dus having the product in good condition, means they are more worth. that is what the ''honest trades go by''
the illegal ones, profit by kidnapping.
there is only a few reasons why a slave is abused.
1 is when a slave is de-humanized. meaning they are treated as lesser being, and to boost ego/superiority of the one abusing.
2 punishment/training/breaking someones will.