The Kaskaskia–Cahokia Trail was the first road (used for walking and stagecoaches) in Illinois, running from Kaskaskia to Cahokia.
The Confederated Peorias originated in the land surrounding the Great Lakes and drained by the Mississippi River.
Those peoples are the Illinois or the Ilini Indians, descendants of the people who created the large mound societies in the Great Plains two to three thousand years ago.
[1] When the French created permanent settlements at Kaskaskia and Cahokia, they named these townships after the Illini Indians who lived there before.
Other villages, towns, and settlements grew over the next century dotting the east half of the Mississippi River's floodplain.