Illinois is bordered by the Mississippi River on the west.
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.
Mississippi.
The Mississippi River.
Illinois is bordered by the Mississippi River on the west
Illinois is bordered by the Mississippi River on the west.
Mississippi river
The Mississippi River is the largest river and it is the western border of Illinois. The Ohio and Wabash Rivers are the southern border of Illinois. The Illinois River is the largest internal river in Illinois.