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Yellowstone River
tributary of the Missouri River in North Dakota, Montana, and Wyoming in the United States / From Wikipedia, the free encyclopedia
The Yellowstone River is a river in the northwestern part of the United States. It is a tributary of the Missouri River and flows through the states of Wyoming, Montana, and North Dakota. It also flows through Yellowstone National Park and feeds Yellowstone Lake.
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The Yellowstone River was first explored in 1806 by William Clark during the return trip of the Lewis and Clark Expedition.