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.
The Mississippi River forms the western boundary of Illinois.
The Mississippi River forms the western boundary of the State of Illinois.
Mississippi river
The Mississippi River.
Illinois is bordered by the Mississippi River on the west
the Mississippi River
The river that forms the western border of Illinois is the Mississippi River.
Missisippi
Mississippi River