Discovery and exploration 492 Colonies 470 History 469 Spanish 173 Indians 154 HISTORY 146 General 117 more ... Antiquities 113 Administration 97 Politics and government 97 Indians of North America 94 Discoveries in geography 88 British colonies 84 History and criticism 81 SOCIAL SCIENCE 80 Slavery 72 Spanish colonies 71 Civilization 69 Description and travel 61 Explorers 59 Commerce 53 Social conditions 51 Race relations 50 Indians, Treatment of 45 Colonization 42 Historiography 41 Norse 40 Americas (North, Central, South, West Indies) 38 POLITICAL SCIENCE 37 Economic conditions 36 less ...