Which environmental change allowed people to travel by land between Asia and North America?
(1 point)
Responses
human adaptation to Arctic environments
human adaptation to Arctic environments
the introduction of horses to North America
the introduction of horses to North America
the formation of ice sheets on land
the formation of ice sheets on land
a rise in ocean temperatures
the formation of ice sheets on land
The correct response is:
the formation of ice sheets on land
The environmental change that allowed people to travel by land between Asia and North America is the formation of ice sheets on land. To understand this, we need to look at the historical context.
During the last Ice Age, about 20,000 years ago, much of the Earth's water was locked up in glaciers, causing a drop in sea levels. This drop in sea levels enabled the formation of a land bridge known as Beringia between Siberia in Asia and Alaska in North America. This land bridge emerged because the water from the melting glaciers collected in the ice sheets, allowing people to cross between the continents.
As the ice sheets formed, the sea levels dropped, exposing a vast expanse of land. This allowed early human populations to traverse the land bridge and migrate from Asia to North America. This migration is widely believed to have been the origin of the indigenous peoples of the Americas.
Therefore, the correct response to the question is:
the formation of ice sheets on land.