As for native Americans, their culture doesn't go back as far as we are misled to believe. It's much more recent. The various peoples who populated the Americas would have had to come here after The Flood. Genetic, linguistic, cultural, culinary, religious, and archaeological evidence shows East Asian, Middle Eastern, Indian, African (Egypt) and Nordic blood depending on the tribe. (The Mandans were mixed with Nordic and also possibly some northeastern woodland tribes in Canada).
These people were not perfect either and warred with each other, sometimes visciously, and frequently kidnapped and enslaved the children of their enemies. Sacagawea herself had been kidnapped and raised by the Hidatsa even though she was Shoshone. That was a much better fate than being killed or scalped alive.
You can't put all the various American tribes under one umbrella, as they were a diverse mix and some were peaceful and others not
Our original system was influenced by Algonquin speakers