The Ice Age played a crucial role in shaping human migration patterns. During this period, which included several glacial and interglacial cycles, the Earth experienced significant drops in temperature, resulting in expansive ice sheets. These environmental changes forced human populations to adapt by seeking more hospitable climates. As ice sheets melted and land bridges formed, such as the Bering land bridge connecting Asia and North America, humans migrated in search of food and resources. This facilitated the spread of human populations across continents and contributed to the peopling of diverse regions around the world.