Final answer:
The Bering Land Bridge theory suggests that nomadic peoples traveled from Asia to the Americas by foot across a land bridge called Beringia during the last Ice Age.
Step-by-step explanation:
The theory that states that nomadic peoples traveled by foot from Asia across a land bridge to the Americas is the Bering Land Bridge theory. This theory suggests that during the last Ice Age, a land bridge called Beringia connected the regions of present-day Siberia and Alaska.
As the sea levels dropped, allowing for a passage between the two continents, nomadic people migrated across this land bridge and eventually populated the Americas.
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