And Christianity is nothing like an original religion, either. Did you just mean ‘Christianity’ by ‘religion’?

Yep.

… the United States prior to the freedom of the slaves,…

It’s a process of learning. Civilizations who abuse the weak, and deny individual humanity, are doomed to fail.
This is the lesson the US needs to focus on right now. This is why there is such a push to rewrite history, and gut our educational system.
I never said humans were perfect, but we can learn.