Answer :

Answer:

Explanation:

What he finds, despite the best efforts of archaeologists and the latest technology, still remains in many ways a mystery.

Speaking from his home in Colorado, he explains why many Native Americans reject the idea that their ancestors migrated from somewhere else; how an archaeologist nicknamed Dr. Poop believes he has identified the first human excrement in America; and why diversity seems to have been built into America’s DNA.

Answer:people entered North America by crossing over the Bering Strait, 15-20k years ago. Reasons were climate change, chasing food, and civil unrest.

Explanation:

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