America 170 History 72 Latin America 60 Indians of North America 53 United States 32 Literature 22 North America 15 Indian authors 13 United States of America 13 General history of North America - United States 12 Social conditions 12 Economics 11 Philosophy 11 Canadian literature 10 History America 10 Foreign relations 9 History and criticism 9 Indians in literature 9 Africa 8 American literature 8 Arts 8 Asia 8 Civilization 8 Government 8 India 8 Indians of South America 8 South America 8 Women 8 Central America 7 Economic development 7