The department of the Interior which was created in 1849, is responsible for managing the national parks system in the US.
Head of the department of the Interior is the secretary of the Interior who is reportable to the president of US.
Its responsibility is to conserve most of the natural resources and land reforms. It also run many programs related to the historic preservation.
This department is generally known as "Department of everything else" because it has a lot of functionaries and a very broad range of responsibilities over it.
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The answer would be majority opinion,
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