Cahokia settled
1050 CE.
Shown on the map at 38.654°, -90.064°.
The Cahokia Mounds (also simply known as Cahokia) (11 MS 2) is the site of a Native American city (which existed c. 1050–1350 AD) directly across the Mississippi River from present-day St. Louis. The state archaeology park lies in south-western Illinois between East St. Louis and Collinsville. The park covers 2,200 acres (890 ha), or about 3.5 square miles (9 km2), and contains about 80 manmade mounds, but the ancient city was much larger. At its apex around 1100 AD, the city covered about 6 square miles (16 km2), included about 120 earthworks in a wide range of sizes, shapes, and functions, and had a population of between 15,000 and 20,000 people. Cahokia was the largest and most influential urban settlement of the Mississippian culture, which developed advanced societies across much of what is now the Central and the Southeastern United States, beginning around 1000 AD. Today, the Cahokia Mounds are considered to be the largest and most complex archaeological site north of the great pre-Columbian cities in Mexico. The city's original name is unknown.
Text from the Wikipedia article Cahokia, licensed CC BY-SA 4.0.