- During the last Ice Age. Thick sheets of ice called glaciers covered the upper third of North America.
How Long Have Indians Lived in North America?
-Scientists thought American Indians have lived in North America for no longer than 4,000 years until George McJunkin found very large animal bones under many layers of dirt
What Did Scientists Learn from the "Bone Pit"?
- They turned out to be important information of how long American Indians have lived in North America.
Were the Clovis People the First Americans?
- Another group entered the Americans at the same time.
Where did Each of the Southwestern Cultures Live?
- Dry desert areas, which is now known as Arizona.
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