Slavery 152 Politics and government 77 Extension to the territories 49 Tariff 29 Compromise of 1850 24 History 21 Law and legislation 10 more ... Reconstruction 10 %SP3 9 Afro-Americana 9 Petition, Right of 9 Antislavery movements 7 Enslaved persons 7 Secession 7 Emancipation 6 Justification 6 African Americans 5 Missouri compromise 5 Oregon question 5 Statehood (American politics) 5 Campaign literature 4 Currency question 4 Finance, Public 4 Free trade 4 Protectionism 4 Slave trade 4 Speeches in Congress 4 States' rights (American politics) 4 Abolitionists 3 Banks and banking 3 Causes 3 Debts, Public 3 Economic conditions 3 Independent treasury 3 Military pensions 3 Territories and possessions 3 Centennial celebrations, etc 2 Civil rights 2 Confiscations and contributions 2 Controversial literature 2 less ...