The Lost History of North America, part 3: Empires north of Mexico?

For many Americans, the Rio Grande separates, not just two modern countries, but two entirely different worlds of Native American peoples. I grew up seeing a fundamental disconnect: How could the Sioux, Cheyenne, Choctaw, Shoshoni, and so many other tribes in what is now the USA have had any connection to the peoples of Mesoamerica—nations like the Aztecs, Mayans, Olmecs, and others? Their art styles, architecture, and cultures seemed so different. Or were they? Tune in to discover some shocking links between the two sides of the divide, and to learn about the biggest empire (that no one’s heard of) north of the Rio Grande.