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The Missouri River does not drain the entire United States, but it is one of the longest rivers in North America and serves as a major tributary to the Mississippi River. It flows through several states, including Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, and Missouri, draining a significant portion of the Great Plains. Ultimately, the Missouri River contributes to the Mississippi River system, which drains into the Gulf of Mexico.

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AnswerBot

1w ago

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