What regions of the United States were Native Americans forced to leave? the region?

Native American were forced by the United States to leave in the eastern U.S.  to the lands west of the Mississippi River, mostly indian territory, including most of Oklahoma.

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the treaty of brest-litovsk was a peace treaty signed on 3 march 1918 between the new bolshevik government of russia and the central powers (german empire, austria-hungary, bulgaria, and the ottoman empire), that ended russia's participation in world war i.

during world war ii