The science of the human genome has shed light on the original ancestry of the Ancient Americans. Scientists studying the ancestry of the human race through genetic testing have found that the first inhabitants of the Americas was an ancient people who originated from Africa. These people then migrated to the Americas via an ancient land bridge known as Beringa.
Following the Late Glacial Maximum, Beringa was swallowed up by the sea as the glaciers melted. This isolated those currently living on the Americas from their ancestor populations. This resulted in a human population with a relatively similar genome to the humans in the east. The only difference lies in the various small mutations that come from living in that races particular environment since their isolation.
The sciences also suggest a situation where the Primitive Americas developed at a slower pace when compare to the rest of the world. The eastern hemisphere benefited from an increased number of domesticated plants and animals, a larger land mass in the most desirable equatorial zone, and they also benefited from an increased sedentary population that could then spend less of their time on food gathering and more of their time developing a rich and robust culture.
The natives in the Americas were confronted with a very different set of circumstances. They had a very limited land mass in the most desirable equatorial zone, no large domesticated animals, and few crops. These limitations hinder the progressive development of the Ancient American culture and population. This resulted in the eastern hemispheres dominance of the western hemisphere following Columbus’ expedition to the new world.