In 1967, the European Commission publishes a note on the problems of border regions and more particularly on internal borders. In the first communication on regional policy in the European Economic Community (1965), the Commission renewed its commitment to pursuing a study programme to analyse frontier regions and propose improvements to cross-border coordination. In this framework, the Study on the Liège–Maastricht–Aachen border region is a first important step in defining the methodology, the aim and the organisation of EEC work on regional policy. Furthermore, this study is a forerunner of the Meuse–Rhine Euroregion, an important Euroregion which was established in 1974 and today coordinates transnational cooperation between the five partner regions at the point where the three countries Belgium, Germany and the Netherlands meet (the cities of Maastricht, Heerlen, Liège, Hasselt and Aachen).