ACP–EU development cooperation and which reflects the comparative interests of individual Member States. Beginning in 1957 (Rome Treaty) a group of 6 nations in Western Europe, France, Germany, Italy, The Netherlands, Belgium, and Luxembourg, created the European Economic Community (EEC). These member states were gradually joined by others through various waves of enlargement and became the European Union. Similarly to European expansion, at the time of the Treaty of Rome, there were a limited number of nations involved. Beginning with 18 countries and territories that had special relations with the member states, the so-called Associated States gained membership, eventually establishing the group known
Three pillars of the European Union Three pillars of the European Union Between 1993 and 2009, the European Union (EU) legally comprised three pillars. This structure was introduced with the Treaty of Maastricht on 1 November 1993, and was eventually abandoned on 1 December 2009 upon the entry into force of the Treaty of Lisbon, when the EU obtained a consolidated legal personality. Within each pillar, a different balance was struck between the supranational and intergovernmental principles. Supranationalism was strongest in the first pillar. Its function generally corresponded at first to the three European Communities (European Coal and Steel Community (ECSC), European Economic Community (EEC) and