History Social conditions 21 Politics and government 20 Black people 18 Civilization 18 Slavery 14 Architecture 12 more ... Social life and customs 11 Education 9 Enslaved persons 7 Manners and customs 7 Race relations 7 Colonies 6 Economic conditions 6 Ethnic identity 6 Portuguese 6 Study and teaching 6 Indians of South America 5 Public health 5 Women 5 African influences 4 Africans 4 Criticism and interpretation 4 Freed persons 4 Jews 4 Social aspects 4 Colonization 3 Dictatorship 3 Ethnic relations 3 Ethnicity 3 less ...