Colonies History 502 Administration 90 Politics and government 88 Imperialism 51 Colonization 37 Foreign relations 35 more ... Social conditions 28 History and criticism 27 Historiography 25 Discovery and exploration 23 Indians of North America 23 Race relations 22 Causes 20 Civilization 20 Political aspects 20 Commerce 19 Decolonization 19 Social aspects 18 Ethnic relations 17 Public opinion 17 Slavery 17 Economic conditions 15 British 14 Frontier and pioneer life 13 Colonial influence 12 First contact with Europeans 12 Government relations 12 Colonies in literature 11 Imperialism in literature 11 less ...