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Designated a state from the southernmost part of the Louisiana Territory on April 30, 1812, Louisiana was a slave state and sided with the Confederacy during the Civil War. The state capital was originally in New Orleans. It briefly moved to Donaldsonville in 1831 before returning to New Orleans shortly thereafter. Baton Rouge was designated as the new state capital in 1849.
"An Act to Enable the People of the Territory of Orleans to form a Constitution and State Government, and for the Admission of Such State into the Union, on an Equal Footing with the Original States, and for Other Purposes," 20 February 1811, Statutes at Large of the United States 2 (1846):641-43; "An Act for the Admission of the State of Louisiana into the Union, and to Extend the Laws of the United States to Said State," 8 April 1812, Statutes at Large of the United States 2 (1846):701-04.