(And I am so glad to see you post again I don't know what to do with myself. Personally, I've got one foot and three toes off the other out the door here, I'm so incredibly sick of and bored with this place)
The thing is, people have conducted wars and been either the conquered or the defeated for eons. That's nothing new. In the past, slaves were even able to become assimilated into the wider culture.
But the concept of European (particularly English) slavery and supremacy is a whooooole 'nother thing altogether. It's not just "yeah, we won the war" it's "yeah, we won the war and we will now create "science" that supports our inherent physical, intellectual and cultural supremacy, and entwine that with a religion that we will use to support that "supremacy" as we steal from and decimate societies and cultures all over the world." The violence the author mentions is a compelling bit of that "supremacy" and we still see that today with many of the "I loves my guns!!" idiots running around taking AK-47s to the grocery store in order to prove some inane point.
And the ramifications of this are STILL being felt, centuries later. It's in everything from the utter lack of history of non-European cultures being taught in schools, to the systemic racial discrimination that people of color still deal with, to the "light is right" concept that has absolutely blanketed the beauty industry in Western cultures and leached into others. It's as if the conquerors convinced everyone that no other continent, no other group in the world's history has done anything of note, and so everyone but them should be ignored. And everyone has suffered as a result, in my opinion.
If you do post this in GD, let me know and I'll have your back. This site has gone completely to the dogs and this is pretty much the only space for me left in it, but if you do venture out I've got your back.