Slavery 1,904 Politics and government 319 History 278 African Americans 206 Extension to the territories 188 Antislavery movements 182 Controversial literature 182 more ... Slavery and the church 154 Enslaved persons 103 Justification 85 Emancipation 78 Slave trade 78 Speeches in Congress 77 Afro-Americana 62 Abolitionists 61 Colonization 56 Social conditions 50 Esclavage 49 Fugitive slaves 43 Slavery in the Bible 43 %SP3 40 Societies, etc 40 Compromise of 1850 39 Republican 39 Society of Friends 38 Campaign literature 35 Secession 34 Race relations 31 Law and legislation 26 Missouri compromise 22 Anti-slavery movements 21 Campaign literature, 1860 21 Causes 21 Democratic 21 Histoire 21 Political aspects 21 Description and travel 20 Slave labor 20 Economic conditions 19 Campaign literature, 1856 18 less ...