Sectionalism (United States) History 51 Politics and government 30 Slavery 22 Political aspects 18 Causes 10 Antislavery movements 8 more ... Extension to the territories 7 Sectionalism (U.S.) 7 Territorial expansion 7 Public opinion 6 Constitutional history 5 Missouri compromise 5 Civilization 4 Reconstruction (U.S. history, 1865-1877) 4 Rhetoric 4 Social conditions 4 Fugitive slaves 3 Historiography 3 Philosophy 3 Political and social views 3 Race relations 3 Racism 3 Conservatism 2 Dissenters 2 Economic conditions 2 Elite (Social sciences) 2 Foreign public opinion, British 2 Frontier and pioneer life 2 Frontier thesis 2 less ...