History 480 Social conditions 115 Politics and government 60 Race relations 58 Architecture 51 African Americans 48 Social aspects 48 more ... Social life and customs 47 Ethnic relations 42 Ethnic identity 36 Art, American 35 Mexican Americans 34 Motion picture industry 33 Motion pictures 31 History and criticism 29 Political aspects 28 Civil rights 27 Manners and customs 27 Intellectual life 26 Japanese Americans 26 Immigrants 25 Economic conditions 22 Civil rights movements 18 Political activity 18 Agricultural laborers 16 Emigration and immigration 16 Civilization 15 Criticism and interpretation 15 Music 15 American literature 14 less ...