How did climate conditions influence the migration of early humans?

Early human migration was heavily influenced by climate conditions, particularly during the ice ages. When the earth experienced these colder periods, significant amounts of water were trapped in ice sheets, resulting in lower sea levels. This drop in sea levels exposed land bridges, such as the Bering Land Bridge, which connected Asia and North America. These newly exposed routes provided pathways for early humans to migrate in search of food, shelter, and more favorable living conditions. The ability to move to new areas in response to changing climates allowed early human populations to expand and adapt to different environments.

In contrast, stable climates did promote agriculture, but they did not directly facilitate migration in the way that climate extremes did. Similarly, climate extremes would not generally deter movement; rather, they could offer challenges that prompted migration. Lastly, warm climates tended to provide sufficient resources for hunting rather than discourage it, as warm and diverse environments often supported a range of game and flora for early human societies.