Politics and government History 17,966 Social conditions 4,051 Foreign relations 3,422 Economic conditions 2,919 Political aspects 2,361 International relations 1,903 更多 ... Presidents 1,471 Democracy 1,454 Political activity 1,344 Race relations 1,289 Political culture 1,251 Economic policy 1,229 Nationalism 1,147 Ethnic relations 1,082 African Americans 1,006 Political parties 905 Diplomatic relations 806 Political participation 789 Economic history 777 Intellectual life 747 Elections 715 Social aspects 704 Jews 687 Civilization 668 Influence 661 Relations 649 Political science 648 Social life and customs 645 Political and social views 620 少 ...