Final answer:
The Bering Landero bridge theory suggests that the first humans in the Americas arrived by crossing a land bridge called Beringia from Siberia to Alaska during the last Ice Age.
Step-by-step explanation:
The Bering Landero bridge theory, also known as the Bering Strait theory, suggests that the first humans in the Americas arrived by crossing a land bridge that connected Siberia to Alaska during the last Ice Age. This land bridge, called Beringia, emerged around 20,000 years ago when sea levels dropped due to the formation of glaciers. It provided a pathway for early humans to migrate from Asia to North America.
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