European Union | European Parliament | Member of the European Parliament | European Commission | European Space Agency | North Pole | United Nations Industrial Development Organization | International Development Association | United Nations Conference on Trade and Development | European | European Court of Human Rights | International Bank for Reconstruction and Development | South Pole | International Fund for Agricultural Development | European Court of Justice | African Development Bank | USL Premier Development League | United States Agency for International Development | European Economic Community | West Midlands (European Parliament constituency) | Integrated development environment | European People's Party | Asian Development Bank | United States Department of Housing and Urban Development | Inter-American Development Bank | Indo-European languages | Party of European Socialists | Millennium Development Goals | Organisation for Economic Co-operation and Development | European Convention on Human Rights |
Common economic problems arising from drastic changes in the industrial and coal mining areas of the four countries have led to the creation of a community of interest and to the development of common projects like the European Development Pole in the cross-border area of Longwy in France, Rodange in Luxembourg and Athus in Belgium.