Government policy History 582 Emigration and immigration 490 Economic aspects 275 Prevention 258 Political aspects 256 Social aspects 240 rhagor ... Law and legislation 234 Social conditions 222 Politics and government 210 Climatic changes 202 Immigrants 180 Research 174 Terrorism 167 Economic conditions 138 Environmental aspects 134 International cooperation 132 Environmental policy 131 Poverty 127 Management 122 Foreign relations 121 Finance 116 Economic policy 103 Women 102 Technological innovations 94 Legal status, laws, etc 90 National security 88 Nuclear weapons 85 Civil rights 82 Ethnic relations 82 llai ...