The geography of Western United States encompasses California's major cities to the volcanic islands of Hawaii and the Rocky Mountains in Colorado.
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Billings, Montana, the state's largest city and the seat of Yellowstone County. The city is on the Yellowstone River and is a trade and shipping center for a highly irrigated region that produces wool, dairy products, livestock, and alfalfa.

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Geography of Washington

Washington, a state in the western United States. It is part of the region known as the Pacific Northwest and is bordered by the Pacific Ocean, Oregon, Idaho, and the Canadian province of British Columbia.

Geography of Colorado

Colorado, one of the states in the west-central United States. It is crossed by the snowcapped Rocky Mountains and is sometimes called the “Top of the Nation,” because its mean (average) elevation—6,800 feet (2,073 m)—is the highest of any state.

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