Land settlement -- Ecology -- 1 Economic conditions 1 Economic development -- 1 Economic policy 1 Environment aspects -- 1 Environmental aspects 1 more ... Environmental policy -- 1 Famines -- 1 Government policy -- 1 Influence on nature -- 1 Man -- 1 Regional planning -- 1 Rural development -- 1 Rural industries -- 1 Social aspects -- 1 Water resources development -- 1 less ...