Emigration and immigration 7 Government policy 3 Security, International 3 Social aspects 3 Spain 3 Foreign relations 2 Politics and government 2 更多 ... Relations 2 Strategic aspects 2 Acculturation 1 Asians 1 Civil service 1 Cultural pluralism 1 Democratization 1 Drug control 1 Economic aspects 1 Economic conditions 1 Hydrocarbon reservoirs 1 Integrated water development 1 International cooperation 1 National security 1 Peace-building 1 Pluralism (Social sciences) 1 少 ...