Economic conditions 87 Economic history 24 Politics and government 22 Social conditions 20 Civilization 16 History 16 Conditions économiques 11 more ... Depressions 10 Social life and customs 10 Description and travel 8 Foreign relations 7 Economic policy 6 Working class 6 Capitalism 5 Communism 5 World War, 1939-1945 5 Descriptions et voyages 4 Industrial policy 4 Labor 4 Labor and laboring classes 4 Labor movement 4 New Deal, 1933-1939 4 Politique et gouvernement 4 Travel 4 Unemployed 4 Commerce 3 Immigrants 3 Industries 3 Nineteen twenties 3 Personal narratives 3 World War, 1914-1918 3 1918-1945 2 Agriculture 2 Aufsatzsammlung 2 British 2 Civilisation 2 Conditions sociales 2 Diplomatic relations 2 Economics 2 Emigration and immigration 2 less ...