A modern, secular system for numbering calendar years that matches the traditional AD timeline. It is used by historians as a neutral, globally shared way to track time. For instance, Cahokia's rapid growth around 1050 CE shows that this massive North American metropolis was bustling at the exact same time medieval London was developing in Europe.
The rise of a hidden metropolis
Engineering with earth
Daily life and cosmic games
The mysterious decline and legacy
A modern, secular system for numbering calendar years that matches the traditional AD timeline. It is used by historians as a neutral, globally shared way to track time. For instance, Cahokia's rapid growth around 1050 CE shows that this massive North American metropolis was bustling at the exact same time medieval London was developing in Europe.
Which major river system was most crucial for Cahokia's transport, agriculture, and trade?

sonia Stack giant earthen mounds to discover how the massive ancient city of Cahokia was built.

sonia Cahokia was the heart of a massive trade network stretching from the Great Lakes to the Gulf of Mexico.
From which distant region did Cahokians obtain the ceremonial marine shells found at the site?
sonia The Metropolis of Cahokia
Under the sky and the midwestern sun, An earthen pyramid outgrew the Giza one.

sonia At the center of Cahokia lay a perfectly leveled, 50-acre grand plaza used for public rituals and community games.
What material was primarily used to build Cahokia's massive two-mile-long defensive palisade wall?
Name origins: The city's original name is lost; 'Cahokia' comes from an Illinois tribe that lived nearby centuries after the city was abandoned.
How did Cahokia's peak population compare to London, England, during the 12th century?
How large was the central Grand Plaza of Cahokia, which was manually leveled by its builders?
An artificial hill or bank of earth or stone. The colossal Monks Mound near St. Louis served as the central earthen pyramid of Cahokia.

