Stock Photo - cartography, map, North America, USA, spreading of slavery after Missouri compromise 1820, map from America, its People and History, Washington DC 1944, private collection, states without slavery: Maine, Vermont, Rhode Island, Massachusetts, New Hampshire, New York, New Jersey, Conneticut, Pennsylvania, Ohio, Indiana, Illinois, Michigan Territorium, states with slavery: Virginia, Delaware, Maryland, North Carolina, South Carolina, Georgia, Florida, Alabama, Mississippi, Louisiana, Tennessee, Kentucky, Missouri, Arkansas territory, spanish border New Spain, since 1821 Mexico, 1819, rivers: Mississippi, Arkansas, Colombia, Rio Grande, Rio Pecos, Colorado, Gila, coast, Gulf of Mexico, historic, historical,