Economic aspects Defenses -- 8 Emigration and immigration -- 4 National security -- 4 Technological innovations -- 4 Capitalism -- 3 Foreign economic relations 3 more ... Free trade 3 Globalization 3 International economic relations 3 Social aspects 3 Economic aspects -- 2 Intercultural communication 2 Politics and government -- 2 Aliens, Illegal -- 1 Appropriations and expenditures 1 Armed Forces 1 Armed forces 1 Arms race 1 Business cycles 1 Cities and towns -- 1 Creative ability -- 1 Defenses 1 Disarmament -- 1 Economic conditions 1 Economic conditions -- 1 Economic convention -- 1 Economic forecasting 1 Economic policy -- 1 Effect of energy costs on 1 less ...