Mississippi River
The Great Smoky Mountains form the eastern border with North Carolina.
The Mississippi River forms the western boundary of Tennessee.
The Mississippi River forms Tennessee's western border.
The Mississippi River for both!
The Mississippi River is on Tennessee's western border separating Tennessee from Arkansas and Missouri.
The Mississippi River is on Tennessee's western border separating Tennessee from Arkansas and Missouri.
The Mississippi River forms the Western border of the States of Illinois, Tennessee, and Mississippi. The Mississippi River forms the Eastern border of the States of Iowa, Missouri, Arkansas, and Louisiana.
Tennessee is separated from Missouri and Arkansas by the Mississippi River.
The Mississippi River is the western border of Tennessee.
The western border of Moldova is formed by the Prut river.
The Mississippi River forms the western border of Illinois.
The Uruguay River forms the western border of Uraguay with Argentina.