History 321 Popular music 108 Politics and government 85 Social conditions 74 History and criticism 59 Black people 54 Social aspects 43 more ... Social life and customs 43 Civilization 42 Economic conditions 38 Indians of South America 37 Music 36 Education 35 Slavery 33 Race relations 32 Manners and customs 30 Brazilian literature 28 Economic history 27 Political aspects 22 Songs, Portuguese 21 Social sciences 20 Motion pictures 19 Religion 19 Study and teaching 19 Description and travel 18 Economic policy 17 Political activity 17 Travel 17 Art, Brazilian 16 Foreign relations 16 less ...