Answer:
Secretary of the Interior.
Step-by-step explanation:
The Department of the Interior of the United States is an organ of the federal government created in 1849, a year after the war with Mexico and the annexation of Texas, California and other territories of the Mexican cession. The objective of this body is to administer the territories owned by the federal government and, in addition, to deal with the relationship between it and the native peoples of the country. Thus, it protects the interests of the federal government and decentralizes its functions, given the enormous size of the nation.