Illinois is bordered by the Mississippi River on the west
The Mississippi River
Peoria, IL is east of the Mississippi River which serves as the western border of the state of Illnois.
The Mississippi River forms the western border of Illinois.
The Mississippi River forms the western border of Illinois.
The Mississippi River forms the wavy western border of Illinois. And the Ohio Wabash River is the southern border of Illinois.
Mississippi River
The river that forms the western border of Illinois is the Mississippi River.
Illinois is bordered by the Mississippi River on the west.
the Ohio River
Mississippi.
The Mississippi River.