Tuesday, September 13, 2011
Tim De Chant on the density of cities in the pre-Columbian United States:
Cahokia is one of the largest historical American cities you’ve probably never heard of. Peaking around 1250 CE. . . . With somewhere between 10,000 to 15,000 people, it held the record for the largest American city until around 1800, when Philadelphia finally overtook it.