U.S. National Park
From Academic Kids
The parks of the United States National Park system are one type of protected area in the United States and are operated by the National Park Service. Yellowstone National Park was the first national park in the world.
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See also
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External link
- A Brief History of the National Park Service (http://www.cr.nps.gov/history/hisnps/NPShistory/briefhistory.htm)
