Politics and government 35 History 33 Presidents 16 Diplomatic relations 13 Foreign relations 13 English language 9 Economic policy 7 Social policy 7 Economic conditions 6 Social aspects 6 Social conditions 6 Travel 5 Civil rights 4 Description and travel 4 Employees 4 Judges 4 Murder 4 Psychology 4 Usage 4 Civilization 3 Consolidation and merger of corporations 3 Democracy 3 Election 3 Ethnic relations 3 Family members 3 Freedom of speech 3 Government policy 3 History and criticism 3 Human evolution 3 Law and legislation 3