History 95 Politics and government 54 Social conditions 33 Economic conditions 32 Yoruba (African people) 30 Women 19 Womyn 19 more ... Economic policy 16 Social life and customs 16 Igbo (African people) 15 Religion 15 Authors, Nigerian 13 Ethnology 12 History and criticism 12 In literature 12 Foreign relations 11 International relations 11 Manners and customs 10 Civilization 9 Folklore 9 Petroleum industry and trade 9 Colonies 8 Criticism and interpretation 8 Description and travel 8 Social aspects 8 Agriculture 7 Black people 6 Hausa (African people) 6 Intellectual life 6 Nigerian literature (English) 6 less ...