Economic aspects Environmental aspects 6 Globalization -- 6 Social aspects 6 Economic development -- 5 Environmental policy -- 5 Technological innovations -- 4 more ... Economic aspects -- 3 Globalization 3 International economic relations 3 Political aspects 3 Capitalism -- 2 Free trade 2 Global warming -- 2 History 2 International trade -- 2 Military readiness -- 2 Peace -- 2 Petroleum industry and trade -- 2 Political science -- 2 Sustainable development 2 Sustainable development -- 2 War -- 2 Air -- 1 Analysis of variance -- 1 Business cycles 1 Capitalism 1 Case studies 1 Choice (Psychology) -- 1 Civil War -- 1 less ...