What Happened to the Ancient Civilization Hidden Beneath Illinois

Beneath modern Illinois once stood Cahokia, a vast and sophisticated city that around 1100 AD was home to nearly 20,000 people - larger than London at the same time. This compilation explores how this ancient North American civilization built massive earthen mounds, complex urban planning, and far-reaching trade networks without metal tools or written language. Archaeologists still debate why Cahokia and other ancient civilisations suddenly declined, with theories ranging from climate change and flooding to social unrest and resource exhaustion. You’ll learn how much of them remains hidden underground today and why their story were ignored for centuries.
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Видео What Happened to the Ancient Civilization Hidden Beneath Illinois канала BRIGHT SIDE