American Indian ancestors moved not once, but in batches arriving in the Americas, and then after a long period of continuous migration and advancing, and ultimately spread to the whole territory of the Americas. The vast area of the American continent, rich in resources and pleasant climate make Indian ancestors lived in the Americas down. With the evolution of humanity as well as social and economic development of organisms, a batch of Indians moved from north to south across the Americas to establish a variety
American Indian ancestors moved not once, but in batches arriving in the Americas, and then after a long period of continuous migration and advancing, and ultimately spread to the whole territory of the Americas. The vast area of the American continent, rich in resources and pleasant climate make Indian ancestors lived in the Americas down. With the evolution of humanity as well as social and economic development of organisms, a batch of Indians moved from north to south across the Americas to establish a variety