Name at least three points that are used as evidence that the first people in America came from Asia?

Answer 1

The First (Amerind) Migration (earlier than 10,000 BC)

The earliest indisputable evidence of human habitation in northwestern North America dates from nearly 12,000 years ago (about 11,700 BC). Some South American sites (Monte Verde on the Chilean coast, have recently been date to more than 12,000 years ago). Arrow points and other artifacts from this period found in Alaska and parts of northwestern Canada have been labeled the Paleo-Indian tradition. These are the so-called Clovis fluted arrowheads

The Second (Na-Dene) Migration (c. 8,000 BC)

There is evidence that perhaps as early as 8,000BC a new group of Asian immigrants had entered Alaska. These were peoples who had perfected a tundra hunting lifestyle, which extended itself into the newly ice free areas of North America. The characteristic tools of this second group soon spread from Alaska into the Canadian interior. Archeological assemblages nearly identical to those associated with this second wave of immigrants have been found in areas of Kamchatka (the Ushki site), which date from 12,000 to 9,000BC (this was the territory that later came to be inhabited by the Itelmen).

The Third (Eskimo-Aleut) Migration (c. 4,000 BC)

The last wave of human migrants populated for the first time the Arctic coastal zone of North America (which had not been settled even by the Athabaskan reindeer hunters). These were the ancestors of the modern Eskimo and Aleut tribes. There absolutely is no doubt about the Asian origin of this migration: Eskimo tribes remain to this day on both sides of the Bering Strait, and there is ample evidence of Eskimo presence in prehistoric times along the entire coastal zone of far northeastern Asia. It is very likely that the proto-Eskimo-Aleuts subsisted as reindeer hunters in what is now Russia's Chukchi Peninsula before expanding into Alaska before 4,000BC.

Answer 2

There's genetic evidence (recently saw the end of a really interesting documentary on PBS about this -- if you go to

www.pbs.org you could probably find out a lot about that migration.)

There's all the evidence regarding the climate that lowered the ocean level, thereby uncovering the land bridge to the Americas.

Sorry, can't come up with a third.

It's possible it involves tools or some other technology.

Answer 3

I could only think of one off the top of my head, but it's pretty signifigant.

+ "The Bering Land Bridge is significant for several reasons, not least because it enabled human migration to the Americas from Asia about 12,000 years ago"