Social conditions History 78 Politics and government 48 Economic conditions 35 Ethnic relations 29 Social aspects 22 Jews 21 Civilization 16 World War, 1939-1945 15 Social life and customs 13 Political aspects 9 World War, 1914-1918 9 Collective memory 7 Intellectual life 7 Ethnic identity 6 Identity 6 Memory 6 Race relations 6 Historiography 5 History and criticism 5 Antisemitism 4 Colonization 4 Cultural assimilation 4 Immigrants 4 Influence 4 Political culture 4 Religion 4 Study and teaching (Higher) 4 Women 4 African Americans 3