Slavery 1,877 Politics and government 314 History 254 African Americans 197 Extension to the territories 187 Controversial literature 183 Antislavery movements 176 more ... Slavery and the church 156 Slaves 94 Emancipation 85 Justification 85 Speeches in Congress 79 Slave trade 68 Afro-Americana 62 Abolitionists 58 Colonization 55 Social conditions 47 Slavery in the Bible 41 %SP3 40 Compromise of 1850 39 Fugitive slaves 39 Republican 39 Societies, etc 39 Society of Friends 38 Secession 34 Campaign literature, 29 Law and legislation 28 Race relations 26 Anti-slavery movements 21 Campaign literature, 1860 21 Democratic 21 Missouri compromise 21 Causes 20 Political aspects 19 Slave labor 19 Campaign literature, 1856 18 Legal status of slaves in free states 18 Description and travel 17 Economic conditions 17 Law 15 less ...