This subforum is "Before 1900", not "After 1700 and Before 1900". For the majority of human history there was no distinction between race and ethnicity. Romans viewed themselves as closer to Greeks than Persians, but not as the same race, just more "civilized".Wow! What vitriol.
Also maybe try to not mix up race with culture/nationality? Different definitions and all.
So don't go around spouting the false statement that chattel slavery didn't discriminate racially before the Transatlantic Slave Trade when it clearly did.