History 51 Colonies 25 Discovery and exploration 10 Civilization 9 Politics and government 7 Discoveries in geography 6 Europeans 6 more ... Intellectual life 6 Relations 6 Foreign relations 5 Government relations 5 Indians of North America 5 Iroquois Indians 5 Colonization 4 Description and travel 4 Emigration and immigration 4 Frontier and pioneer life 4 Historiography 4 Influence 4 Public opinion 4 Slavery 4 Civil war 3 Diplomatic relations 3 Ethnic relations 3 Foreign public opinion, European 3 Slave rebellions 3 Social conditions 3 Acculturation 2 American newspapers 2 Collectors and collecting 2 less ...