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Department of the Interior

noun

  1. the department of the U.S. federal government charged with the conservation and development of the natural resources of the U.S. and its possessions. : DOI


Department of the Interior

  1. A department of the federal executive branch responsible for the National Park Service, the Bureau of Indian Affairs, and a variety of programs designed to preserve natural resources in the United States and its territories and possessions in the Pacific Ocean .


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Department of StateDepartment of the Treasury