History 635 Politics and government 281 Foreign relations 168 International relations 168 Economic conditions 156 Colonies 154 Working class 112 more ... Church history 77 Social conditions 76 Economic policy 73 World War, 1939-1945 73 Industries 71 Commerce 68 Constitutional history 68 World War, 1914-1918 62 Labor unions 53 Education 51 Finance 51 Economic aspects 47 Manners and customs 46 Social life and customs 46 Currency question 45 Socialism 43 Civilization 42 Law 38 Administration 33 Wages 33 Commercial policy 30 Land tenure 30 Unemployed 28 less ...