Illinois River

Illinois River
The Illinois River is a river in the United States. It is in the state of Illinois. It is an important tributary of the Mississippi River. The length of the river is about 439 km.
The source of the river is in northeastern Illinois, near the city of Joliet. It flows east across Illinois, then southeast. It passes the city of Peoria, the largest city on the river.
It flows into southwestern Illinois. It joins the Mississippi River 40 km north of Saint Louis, Missouri. The Illinois river also goes through the northern most edge of Oklahoma.
The river was used for transportation by the Native Americans. It was also used by early French trappers. It was an important route between the Mississippi River and the Great Lakes.
In the 19th century, a canal was built that connected the river to Lake Michigan. Large ships now use this canal to go from the Great Lakes to the Mississippi River. The canal goes through the city of Chicago. It is one of the reasons that Chicago became a big city.

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