History 660 Social conditions 247 Politics and government 240 Black people 162 Social aspects 145 History and criticism 140 Popular music 138 more ... Economic conditions 137 Race relations 128 Civilization 100 Indians of South America 96 Social life and customs 95 Slavery 79 Political aspects 77 Foreign relations 75 Economic policy 65 Description and travel 60 Political activity 56 Music 55 Race identity 54 Manners and customs 53 Education 51 Ethnic identity 51 Brazilian literature 48 Religion 48 Motion pictures 47 African influences 45 Economic history 44 Women 44 International relations 41 less ...