That would be the Columbia River. Back in the old days, the settlers decided on Columbia as the name of the new state that would be split off from the Oregon Territory. Someone pointed out that this would be easily confused with District of Columbia, so they named the new state, "Washington."
The river was named after that first attempt at naming the state.
Rio Grande forms the Southern border of the United states.
Arkansas
The gulf that forms part of the southern border of the United States is the Gulf of Mexico
columbia river
The Columbia River forms a border between the states of Washington and Oregon.
Columbia river
michigan
The Columbia River
Columbia river
There are two countries that form the borders of the United States: Canada and Mexico. Canada forms the northern border of the United States and Mexico forms the Southern border of the United States.
The Columbia River.
The Columbia River.