What generalization can you make about the treatment of slaves?

Slavery is revealed to be an utterly loathsome, execrable system that oppressed and physically and mentally brutalized its captives, and destroyed slave and slaveholder alike. Slaves were held in a system of absolute and total oppression; they were kept in ignorance of their birthdays, severed from family and friends, endured the most savage beatings at the hands of capricious masters, were raped and pimped out, forbidden to learn their letters, and deprived of enough food, clothing, and sleep.