Quibbling with Caste

 Started reading Isabel Wilkerson's "Caste: The Origins of Our Discontents". I want to quibble with some sentences on page 29: 

"[The South] was where the tenets of intercaste relations took hold before spreading to the rest of the country..." (There follows a quote from Alexis de Tocqueville with a similar point.) 

I think this is wrong: slavery was a feature of the world before Europeans reached the Americas.  It was a part of the Old Testament, it was part of medieval times, it was an accepted feature of war. It was arguably part of many Native American societies.  There was slavery in Great Britain until the Somerset decision.

The bottom line is: we can't blame the South for slavery, which is the way I read Wilkerson.  She can argue that slavery on Southern plantations was developed into an American archetype, perhaps with some unique features.  But even there, she would need to recognize the differences between Southern slavery and Caribbean sugar plantations. 

As I said, it's a quibble.  Wilkerson's writing at a level of generality and artistry with which I'm not terribly comfortable.