Economic conditions -- Social conditions -- 4 Economic forecasting -- 3 Social indicators -- 2 Social prediction -- 2 Competition, International 1 Debts, Public -- 1 more ... Economic history 1 Economic policy -- 1 Equality -- 1 Forecasts 1 Income distribution -- 1 Industries -- 1 International relations 1 Investments -- 1 Politics and government -- 1 Population 1 Population forecasting -- 1 Public opinion -- 1 Relations -- 1 Social aspects -- 1 Strategic aspects 1 Strategic aspects of individuals places 1 Twentieth century -- 1 less ...