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The river, Rio Uruguay, borders Uruguay's western border.
The physical feature that forms Uruguay's western boundary with Argentina is the Uruguay River. It also forms part of the Brazilian-Argentine border.
The entire western boundary of Kansas is included in the border of Colorado.
The Mississippi River forms the western border of Illinois.
It ia on the eastern border of California. The western boundary of Callifornia is the Pacific Ocean,
Indiana begins at the western border of Ohio. Ohio is the western border is Pennsylvania
Indiana begins at the western border of Ohio. Ohio is the western border is Pennsylvania
Indiana begins at the western border of Ohio. Ohio is the western border is Pennsylvania
The Mississippi River is the western boundary of Tennessee. The Appalachian mountain chain, including the Great Smoky Mountains, are on the eastern border of Tennessee.
The Mississippi River was the western border after the American Revolution. The American Revolutionary War lasted between 1775 and 1783.
The east was bounded by the Mississippi and the West ( andSouth) by the Missouri River.
The Missouri River and its tributary, the Big Sioux, form the western border of Iowa.