Cahokia: The Lost Megacity of Ancient North America

Cahokia. Screenshot: PBS Terra: What Happened to America’s First Megacity?

Over a thousand years ago, a sprawling city in the heart of modern-day Illinois rivaled London in size and complexity. Known today as Cahokia, it was home to around 15,000 people and served as the epicenter of the Mississippian culture—a pre-Columbian civilization that thrived acr…