I have a birthday party to go to right now. Philosophy for one came from Egypt. Dont have time to drop a million links but its a known fact that greek scholars went to africa to study and then came back and were often killed for teaching *foreign doctrines* Greeks learned a lot about engineering from africa for 2. You know, Geometry, Thales went to egypt and brought many concepts back to Greece.
I find that white supremacists or other people that are racist dont like to admit that people in the world have traded knowledge with one another to build their civilizations especially if its foundational knowledge. They want to believe everything happened in a bubble, but thankfully we have honest scholars out there with no agenda that are willing to tell the truth.
You could learn these things to, if you actually liked to read.