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Yellowstone National Park is established as the world's first national park.
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Yellowstone National Park
National park in the western United States
Yellowstone National Park is a national park of the United States located in the northwest corner of the state of Wyoming, with small portions extending into Montana and Idaho. It was established by the 42nd U.S. Congress through the Yellowstone National Park Protection Act and…Source: Wikipedia (CC BY-SA)
National park
Park for conservation of nature and usually also for visitors
A national park is a nature park designated for conservation purposes because of unparalleled national natural, historic, or cultural significance. It is an area of natural, semi-natural, or developed land that is protected and owned by a government. Although governments hold…Source: Wikipedia (CC BY-SA)