History 751 Politics and government 324 Indians of South America 110 Social conditions 89 Social life and customs 82 Description and travel 79 Civilization 75 更多 ... Foreign relations 62 Indians of Mexico 61 Antiquities 60 Intellectual life 41 Government relations 38 Economic conditions 37 Historiography 37 Archaeological museums and collections 35 Religion 33 Presidents 32 Relations 32 Colonies 30 Indian art 28 History and criticism 27 Blacks 26 Race relations 24 Political violence 23 Discovery and exploration 22 Emigration and immigration 22 Ethnic relations 22 Philosophy 22 Travel 22 Excavations (Archaeology) 21 少 ...