The Department of the Interior (DOI) in the United States is a federal executive department responsible for managing and conserving the country’s natural resources and cultural heritage. It oversees various agencies and bureaus that handle a wide range of responsibilities, including managing national parks, wildlife refuges, and public lands, as well as overseeing programs related to Native American relations, natural resource extraction, water resources, and territorial affairs. The department aims to uphold conservation efforts, promote sustainable resource use, and protect the nation’s natural and cultural heritage for present and future generations.