But in Byzantium, they did slavery with style. Had a whole
  system going that worked pretty good. "At certain times a
  10-year-old child's price was 10 nomismata, a castrated one of
  the same age was worth 30. An adult male 20 and an adult eunuch
  50 nomismata." Seemed like a fair trade. === BUT, interestingly:
  The Emperor Justinian forbade castration to take place within
  his domains. He's the dude that "Christianized" Byzantium.
  Brought in greater rights for women and slaves. Outlawed
  castration, although enforcement is another issue [hence the
  continued practice] - and this was in the 6th century AD. Thanks
  likely to the Empress Theodora, his wife, who was said to be
  equal or more powerful than her husband, women gained tremendous
  rights and freedoms in Byzantium, which was the Christianization
  of the Roman Empire and lasted another 900 years. So, perfect?
  No. But better than it had been? Yeah. === Mind you, in my view
  of history, the stuff that happened in the West post Great
  Schism wasn't Christianity but some power play that was
  sucessful, split off during the Reformation, and the people that
  are picking up a book and saying, "hey, we're Christian too!"
  are disconnected from a historical continuuity. I also say the
  same for Muslims at the High Baghdad Abbasids lost their way as
  well when the caliph became their Pope. That wrecked things for
  them and it was all downhill. That to me was the start of "the
  thing inspired by Islam" but wasn't Islam. But I view history
  oddly.