The Missouri River forms the border between Iowa and Nebraska.
The Mississippi River, one of the most important in the US, forms Missouri's eastern border. The Missouri River, which is also an important river, cuts the state in half.
The Missouri River
The Columbia River forms most of the border between Oregon and Washington before flowing into the Pacific Ocean.The river that forms part of the border between two northwestern states and flows into the Pacific Ocean is the Columbia river.
The Columbia River forms most of the border between Oregon and Washington before flowing into the Pacific Ocean.The river that forms part of the border between two northwestern states and flows into the pacific ocean is the Columbia river.
the Missouri river
The Missouri River
Mississippi river
Columbia River
The Mississippi River forms the border between Missouri and Illinois.
The American river?
ohio vally