Colonies 773 History 689 Politics and government 255 Causes 162 Discovery and exploration 100 Commerce 93 Administration 80 more ... Foreign public opinion 77 Indians of North America 63 Spanish 50 Slavery 39 Taxation 39 Economic policy 33 Civilization 31 Foreign relations 31 Description and travel 30 Explorers 30 Race relations 27 Defenses 24 Colonization 22 Fortification 22 Colonial forces 21 Economic conditions 21 History and criticism 21 Frontier and pioneer life 19 Government relations 19 African Americans 17 British forces 16 Slave trade 16 Indians 15 less ...