United States map with Missouri Compromise Line. Legend:   Free states as of 1850   Slave states as of 1850 (not including Texas claims surrendered in Compromise of 1850)   Border slave states that did not later secede in 1861   Territories (with eventual state boundaries superimposed, and including later Gadsden Purchase of 1853)   Missouri Compromise Line
US_Secession_map_1865.svg
File:Blank US Map.svg
Tintazul: Júlio Reis
derivative work: JWB (talk)