Colonial question Territorial expansion History 17 Foreign relations 9 International relations 6 Frontier and pioneer life 5 Insular possessions 5 more ... Diplomatic relations 4 Imperialism 4 Political aspects 4 Government relations 3 Racism 3 Acculturation 2 Annexation to the United States 2 Christianity and politics 2 Civilization 2 Foreign public opinion, American 2 Globalization 2 Indians of North America 2 Indians, Treatment of 2 Insular possessions of the United States 2 Pioneers 2 Political messianism 2 Politics and government 2 Relations 2 Spanish-American War, 1898 2 Territories and possessions 2 19e siècle 1 Aeronautics 1 African Americans 1 less ...