Where did native americans come from and what did they have to cross to get here?

Native Americans are believed to have descended from groups that migrated from Asia to North America via the Bering Land Bridge, a land connection that existed during the last Ice Age, around 20,000 to 15,000 years ago. This bridge connected present-day Siberia and Alaska, allowing early humans to cross into North America as they followed herds of large animals. Over time, these populations spread throughout the continent, developing diverse cultures and societies.