The correct answer is: With the help of conservationist John Muir, Yosemite was designated a national park on October 1, 1890, making it the country's third-oldest park. The first national park was Yellowstone in Wyoming, designated in 1872.
The correct answer is: With the help of conservationist John Muir, Yosemite was designated a national park on October 1, 1890, making it the country's third-oldest park. The first national park was Yellowstone in Wyoming, designated in 1872.