Who is the ancestor of American Indians?

Indian ancestors crossed the Bering Strait from southwest Asia (deserters) and arrived in America. Mongolians in Asia are related to the ancestors of Native American Indians.

The Bering Strait is located at the northeast end of the Asian continent, and the other end of the Bering Strait is the northwest end of America. The Bering Strait has an average width of only 65 kilometers and its narrowest point is only 35 kilometers. There are also two small islands (Crater Manof Island and Crewdson Stan Island), which are only 4 kilometers apart. Moreover, the Bering Sea is very shallow, with an average depth of 42 meters and the deepest point of only 52 meters. As long as the sea level drops by more than 40 meters, it can be connected to the land. According to some geological studies, at some time in the Quaternary, especially in the last ice age, the world climate became cold, glaciers came, and the sea level dropped by about130 ~160m. The Bering Strait, with a water depth of only a few tens of meters, emerges from the water, thus exposing a continental bridge, connecting Northeast Asia and northwest America, and becoming a natural passage between Asia and the United States. In addition, at this time, the climate in Northeast Asia during the Ice Age was very cold and rich in glaciers, while there were no glaciers in the American continent, with a mild climate and abundant food. Mammoths, elephants, musk oxen, moose, sheep and many other animals live here. At that time, Northeast Asian hunters who hunted mammoths and deer for a living were likely to follow these animals across the Bering Strait Continental Bridge to America and become the originator of ancient American civilization. Then, as the glaciers melted and the sea level rose, the rolling waves flooded the continental bridge again, cutting off the connection between the two continents, making these outsiders indigenous to the independent American continent.

There are other theories about the time and route when Indian ancestors migrated to America. No matter which statement is correct, one thing is certain, that is, immigrants never arrive in the United States once, but arrive in batches, and then after a long period of continuous migration and promotion, they eventually spread all over the United States. The vast territory, rich resources and pleasant climate of the American continent make the ancestors of Indians live in America. With the evolution of human organisms and the development of social economy, Indians who migrated in batches established various living and social systems throughout America from north to south, creating a lot of material and cultural wealth. However, American Indians are not a unified nation. They entered the United States at different times and had different backgrounds. Influenced by geographical environment and natural conditions, they gradually formed many tribal groups with different languages, customs and cultures.

Mongolian experts believe that Mongolians who lived by hunting took stone tools and crossed the Bering Strait or Aleutian Islands, which were still land at that time, and reached the American continent first.

Many scholars in Russia and the United States believe that Asians first arrived in America about 25,000 years ago. One possibility is that Asian hunters entered America from the Bering Strait, which was still land at that time, and the other possibility was that they arrived in America from the sea.

The ancestors of Mongols and Indians may have some kind of blood relationship.