You mean the time when slavery was common throughout the world, and that literally every spot on planet earth was fundamentally ethnocentric?
So yes, if we want to talk about racial issues during the foundation of America and world history, then sure, but it has not so much to do with America and also, it has little to with White Supremacy and more to do with Ethnocentrism.
Literally today in 2021, in almost every single nation outside the New World or the West, a White person would always be considered an outsider by virtue of their race.
That fact is completely ignored by the woke crowd who want to somehow decontextualise all of this to make it a 'white problem', when it's not. Frankly, I suggest there are a lot of racist impulses behind a lot of the woke smokescreen.