What is the leading theory about how early humans arrived on the American continent

Answer 1

The leading theory about how early humans arrived on the American continent is called the Beringia land bridge theory. According to this theory, it is believed that around 20,000 to 25,000 years ago, during the last Ice Age, sea levels were much lower, and a land bridge known as Beringia emerged between present-day Siberia and Alaska. It is proposed that early humans, known as Paleo-Indians, migrated across this land bridge in pursuit of large game animals, eventually populating the American continent. As the Ice Age ended and sea levels rose, the land bridge was submerged, cutting off direct contact between Asia and the Americas.