Answer:
the search for food items.
Step-by-step explanation:
The common reason that both of these groups had to migrate to new lands was the need to search for food. Both of these groups migrated out of survival. The people who crossed the Bering strait were most likely following herds of animals that they needed to hunt in order to feed themselves. On the other hand, Europeans who migrated to America were looking for land to farm in order to be able to grow crops to feed themselves.