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Add the missing capital lettersto the story.
The explorers who first discovered Yosemite National Park promoted a park bill in Washington in late 1871
and early 1872. The Yosemite Act of 1864 was a good starting point. It had banned settlement in Yosemite
Valley and entrusted it to the care of California officials. Elsewhere in the US, the wonders of Yellowstone,
which were shown through Jackson’s photographs, Moran’s paintings and Elliot’s sketches, had sparked
interest in Congress. Therefore, it didn't come as a surprise that the United States Congress founded
Yellowstone National Park in 1872. On a spring Friday, March 1, 1872, President Ulysses S. Grant signed the
Yellowstone National Park Protection Act into law. The national parks became an American invention and
Yellowstone the world’s first national park.