The intercontinental land bridge that existed during the Ice Age is known as Beringia. This land bridge connected Asia and North America, allowing the migration of humans and various species across the continents. During the last Ice Age, lower sea levels exposed the land between modern-day Alaska and Siberia, facilitating this movement. Beringia was crucial for the peopling of the Americas, as early hunter-gatherers crossed from Asia in search of food and resources. As the Ice Age ended and sea levels rose, Beringia was submerged, isolating the populations that had migrated, which contributed to the distinct cultures and peoples of North America.