Final answer:
The earliest known people arrived in North America approximately 20,000-14,000 years ago, supporting human migration from Asia.
Explanation:
The earliest known people arrived in North America approximately 20,000-14,000 years ago according to current archeological evidence. Both the Bering Land Bridge and coastal migration theories support human migration from Asia, indicating the origins of the first Americans. The discovery of pre-Clovis cultures challenges earlier beliefs about the Clovis peoples as the first inhabitants of the Americas.
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