Studies of biogenetic and geological features, as well as linguistic information and archaeological data, indicate that the first settlers of America passed through the Bering Strait to Alaska some 14 000 years ago, although there are some sites that suggest dates prior to 30 000 years.
There are many proposals about the origin of American man, some with more scientific support than others. We have from F. Ameghino's autochthonistic approach, according to which ,man did not arrive, but has always been here, to the one proposed of a religious nature in which man comes from lost continents or disappeared biblical tribes.
Within these theories there is no single position, but rather an open debate, where the academic community converges on new proposals on old topics. But all do agree that the origin of man's ancestors can be found in the eastern part of the African continent, inhabited by Australopithecids for more than two million years. Their descendants, the Homo erectus, left Africa and began to populate the planet; the last continent to be populated was America, by those currently called Homo sapiens sapiens.
