Imperialism History 47 Foreign relations 18 International relations 11 Politics and government 10 Relations 8 Social aspects 8 more ... Diplomatic relations 6 Borderlands 5 Colonies 5 Economic aspects 5 Economic conditions 4 Territorial expansion 4 Historiography 3 History, Ancient 3 Japanese 3 Philosophy 3 Boundaries 2 Chinese literature 2 Cold War 2 Colonists 2 Commerce 2 Commerce in literature 2 Economic history 2 Economic policy 2 Economics and literature 2 Elite (Social sciences) 2 Emigration and immigration 2 Environmental aspects 2 Ethnic relations 2 less ...