Politics and government History 1,376 Social conditions 306 Foreign relations 239 Economic conditions 190 Nationalism 106 World War, 1939-1945 96 Politicians 85 Sources 78 Prime ministers 74 Political culture 73 Presidents 73 Communism 66 National socialism 66 Statesmen 59 Influence 56 Political aspects 54 Social life and customs 53 Political activity 51 Economic policy 50 Heads of state 50 Addresses, essays, lectures 49 Biography 47 Ethnic relations 47 Civilization 45 Causes 44 Fascism 43 Intellectual life 39 Democracy 36 Colonies 34