Slavery and Civil War Timeline By Jacob_f 1776 US declares independence and becomes a country 1803 1803: Louisiana Purchase doubles the size of the United States 1820 Missouri Compromise between North and South: The compromise limits slavery to the South 1820 Underground railroad: slaves by the thousands escape to the north 1831 Trail of Tears 1848 :War with Mexico 1849 Harriet Tubman escapes 1850 Fugitive slave law 1857 Dred Scott loses case 1858 Lincoln vs Douglas debates 1860 Lincoln elected president 1860 South Carolina secedes 1861 Picinic of the bull run 1861 eleven southern states secede 1863 emancipation proclomation 1864 shermans march to the sea 1865 Last slaves freed in texas 1865 Robert E lee surrenders