History 568 Politics and government 443 Social conditions 386 Economic conditions 226 Economic history 203 Social aspects 143 Foreign relations 128 mer ... Diplomatic relations 126 Political aspects 125 History and criticism 100 Social life and customs 81 Economic policy 73 Manners and customs 68 Democracy 55 Motion pictures 53 Race relations 53 Civilization 52 Religious aspects 47 Economic aspects 45 Political activity 45 Women 43 Government policy 41 Ethnic relations 40 Emigration and immigration 36 National security 34 Influence 33 Political culture 32 Presidents 32 Islam 31 Military policy 31 mindre ...