CLASSIC: How did North America's largest city disappear? The Mysterious Collapse of Cahokia
Four centuries before Columbus reached the western hemisphere, Cahokia was a prosperous pre-American city with a population similar to London’s. In fact, it was probably the largest North American city north of Mexico at that time. While Cahokia was a major population centre around AD1050, by 1350 it was largely abandoned by its people – and, even today, no one is sure why.
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