History 722 Indians of North America 543 Social conditions 127 Antiquities 124 Indian art 110 Social aspects 101 History and criticism 100 更多 ... Emigration and immigration 85 Birds 80 Free trade 78 Colonies 71 Religion 71 Discovery and exploration 70 Social life and customs 69 Politics and government 64 Ethnic relations 60 American literature 57 Economic conditions 57 Indian women 57 Discoveries in geography 56 Indians, Treatment of 56 Ethnic identity 54 Description and travel 52 Race relations 50 Economic integration 49 Indian philosophy 49 Paleontology 48 Geology 47 Government relations 45 Missions 44 少 ...