Politics and government History 22,478 Social conditions 4,613 Foreign relations 4,534 Economic conditions 3,437 Political aspects 2,689 Presidents 1,979 更多 ... Democracy 1,840 Political activity 1,495 Political culture 1,472 Economic policy 1,468 Elections 1,436 Race relations 1,383 Nationalism 1,351 Ethnic relations 1,218 Political parties 1,189 African Americans 1,138 Political science 982 Colonies 906 Politica y gobierno 903 Civil rights 888 Slavery 843 Jews 839 Social aspects 791 Influence 790 Intellectual life 771 Relations 753 Political participation 750 Social life and customs 740 Political and social views 720 少 ...