<P> Yellowstone National Park is an American national park located in Wyoming , Montana , and Idaho . It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1 , 1872 . Yellowstone was the first national park in the U.S. and is also widely held to be the first national park in the world . The park is known for its wildlife and its many geothermal features , especially Old Faithful geyser , one of its most popular features . It has many types of ecosystems , but the subalpine forest is the most abundant . It is part of the South Central Rockies forests ecoregion . </P>
<P> Yellowstone National Park is an American national park located in Wyoming , Montana , and Idaho . It was established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1 , 1872 . Yellowstone was the first national park in the U.S. and is also widely held to be the first national park in the world . The park is known for its wildlife and its many geothermal features , especially Old Faithful geyser , one of its most popular features . It has many types of ecosystems , but the subalpine forest is the most abundant . It is part of the South Central Rockies forests ecoregion . </P>
when did yellowstone become the first national park
when did yellowstone become the first national park
March 1 , 1872
March 1 , 1872