History Colonies 608 Discovery and exploration 242 Discoveries in geography 197 Administration 139 Indians of North America 118 Slavery 107 more ... Spanish 95 Politics and government 91 Spanish colonies 91 British colonies 81 Colonization 79 Indians 72 Social conditions 62 Civilization 58 Race relations 58 Commerce 57 History and criticism 52 Historiography 51 Slave trade 51 Black people 48 Ethnic relations 48 Social life and customs 44 Government relations 43 Antiquities 42 Imperialism 42 British 41 First contact with other peoples 41 Missions 38 Relations 38 less ...