Keywords: Slave and Free States before the American Civil War 2.svg Free and Slave States in the period leading to the American Civil War Free states are blue or teal slave states are red or purple Territories are a neutral yellow See key for more information Based on Image US_Secession_map_1865 svg with information from en Image Freeandslavestates gif 2007 Self-made from public domain work Image US_Secession_map_1865 svg Adam Cuerden thumb left Simpler version Maps of the history of the United States History of the United States Maps showing African American history Slavery-related maps |