I'm confused. The best research we have indicates that our earliest ancestors left Africa and spread out. Are you suggesting a simultaneous homosapien evolution in the America's? That'd be remarkable, but such a claim needs extraordinary evidence. I've always understood that, white as I am, my ancient ancestors originally evolved in Africa. It's due to environmental conditions that my skin had lost its melanin. Likewise, your peoples were here in America before modern Europeans arrived, but the origin is the same. The timeline for leaving Africa is highly speculative still. Ultimately, aren't we all just one people? Humans? With love to you.