Politics and government 5,912 History 1,630 Slavery 399 Political activity 354 Foreign relations 242 African Americans 219 Presidents 208 more ... Political science 171 Social conditions 163 Sources 157 Political parties 151 Biography 141 Causes 141 Periodicals 129 Jews 121 Political aspects 119 Political refugees 118 Colonies 117 Economic conditions 101 World politics 98 Secession 87 Extension to the territories 85 Race relations 84 Reconstruction 83 Statesmen 83 Election 77 Societies, etc 75 Communism 74 Speeches in Congress 74 Political history 70 World War, 1939-1945 68 Elections 65 Law 65 Legislators 65 Republican 65 Civil rights 64 Democratic 64 Social life and customs 61 World War, 1914-1918 60 Political and social views 56 less ...