International relations Territorial expansion Foreign relations 59 History 36 Imperialism 27 Relations 9 Political aspects 8 more ... Civilization 7 Colonial question 6 Philosophy 6 Colonies 5 Politics and government 5 Annexation to the United States 4 Influence 3 Moral and ethical aspects 3 Racism 3 Spanish-American War, 1898 3 Diplomatic relations 2 Economic conditions 2 Economic history 2 Insular possessions 2 Insular possessions of the United States 2 Mexican War, 1846-1848 2 Monroe doctrine 2 National characteristics, American 2 Nationalism 2 Philosophy, European 2 Political messianism 2 Popular culture 2 Power (Social sciences) 2 less ...