Economic conditions Social conditions Politics and government 89 History 77 Civilization 13 Social life and customs 9 Foreign relations 8 Social classes 6 Post-communism 5 Urbanization 4 Communism 3 Economic policy 3 Elite (Social sciences) 3 Ethnic relations 3 Geography 3 Intellectual life 3 Political culture 3 Social change 3 World War, 1939-1945 3 Addresses, essays, lectures 2 Anthropo-geography 2 Attitudes 2 City planning 2 Congresses 2 Democratization 2 Depressions 2 Emigration and immigration 2 Maps 2 Population 2 Race relations 2