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April 2000
1937
In 2004. Prior to that, it was a national monument.
In 2004. Prior to that, it was a national monument.
Maya Lin was still an undergraduate at Yale University when she won the national design competition for a Vietnam War veterans memorial to be built near the Lincoln Memorial in Washington, D.C.
Refer to the link attached below.
Dry Tortugas was designated a national monument in 1935, and a national park in 1992.
Because presidents lived in it
It become national monmument in 1918 and a national park in 1980
Jewel Cave was set aside as a National Monument by Theodore Roosevelt on February 7, 1908.
Zion National Monument was created in 1937.
No. It is completely within the sovereign territory of the Navajo Nation, and thus outside the jurisdiction of the federal government. As such, it can not become part of the National Park System. It is instead a Navajo Tribal Park.