Ice ages affected human migration to north america by:

The Ice-Age influenced human migration in many ways. One way is that there was less food, which influenced human migration because people spread out to look for more food sources. Another way is that people wanted to need to feed only themselves, instead of everyone around them. A third way is that the Bering Strait froze, giving them an easy way to travel. This is how the Ice age influenced human migration. The ice age influenced human migration in other ways, too. One way is that it forced the