How did the last ice age affect human migration?

Question

It created land bridges where ocean had once been.
It required people to create new shelters.
It required people to live closer together.
It required people to form larger communities.

Answer 1

The last ice age significantly influenced human migration in several ways, particularly through the creation of land bridges. The most notable example is the Bering Land Bridge, which connected Asia and North America. As sea levels dropped due to the large amounts of water trapped in glaciers, this land bridge emerged, allowing humans to migrate into the Americas.

While the other options mention changes in living conditions and social structures, the primary and most immediate effect of the last ice age on human migration was the creation of these land bridges. Therefore, the best answer is:

It created land bridges where ocean had once been.

This facilitated the movement of populations and had a profound impact on human settlement patterns during that period.