The European Communities (EC) were three international organizations that were governed by the same set of institutions. These were the European Coal and Steel Community (ECSC), the European Atomic Energy Community (EAEC or Euratom), and the European Economic Community (EEC); the last of which was renamed the European Community (EC) in 1993 by the Maastricht Treaty establishing the European Union. The European Union was established at that time more as a concept rather than an entity, while the Communities remained the actual subjects of international law impersonating the rather abstract Union, becoming at the same time its first pillar. In the popular language, however, the singular European Community was sometimes inaccurately used interchangeably with the plural phrase, in the sense of referring to all three entities.
The European Coal and Steel Community ceased to exist in 2002 when its founding treaty expired. The European Community was merged with the second and third EU pillars by the Treaty of Lisbon in 2009, finally allowing the European Union to move beyond being only a concept and to assume the shape of a legally incorporated international organization with juridical personality, designated as the legal successor to the Community. However, the reformed EU has not become entirely unified, because Euratom, though governed with the EU by the common set of institutions, has been retained as an entity distinct from the EU, along with a number of other international entities, such as the European Investment Bank, the European University Institute, the European Stability Mechanism, and the Unified Patent Court.
History
Three communities
The ECSC was created first. Following its proposal in 1950 in the Schuman Declaration, Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany came together to sign the Treaty of Paris in 1951 which established the Community. The success of this Community led to the desire to create more, but attempts at creating a European Defence Community and a European Political Community failed leading to a return to economic matters. In 1957, the EAEC and EEC were created by the Treaties of Rome. They were to share some of the institutions of the ECSC but have separate executive structures.
The ECSC's aim was to combine the coal and steel industries of its members to create a single market in those resources. It was intended that this would increase prosperity and decrease the risk of these countries going to war through the process of European integration. The EAEC was working on nuclear energy co-operation between the members. The EEC was to create a customs union and general economic co-operation. It later led to the creation of a European single market.
The EEC became the European Community pillar of the EU, with the ECSC and EAEC continuing in a similar subordinate position, existing separately in a legal sense but governed by the institutions of the EU as if they were its own. The ECSC's treaty had a 50-year limit and thus expired in 2002; all its activities are now absorbed into the European Community. The EAEC had no such limit and thus continues to exist. Given that nuclear power is a very sensitive issue for the European electorate, the Euratom Treaty has gone without amendment since its signing, and was not even to be changed with the European Constitution intended to repeal all other treaties (the Constitution's replacement, the Treaty of Lisbon, likewise makes no attempt at amendment).
As the EAEC has a low profile, and the profile of the European Community is dwarfed by that of the EU, the term "European Communities" sees little usage. However, when the EU was established the institutions that dealt solely or mainly with the European Community (as opposed to all three pillars) retained their original names, for example the formal name of the European Court of Justice was the "Court of Justice of the European Communities" until 2009.
In 1967, the Merger Treaty combined these separate executives. The Commission and Council of the EEC were to take over the responsibilities of its counterparts in the other organisations. From then on they became known collectively as the "European Communities", for example the commission was known as the "Commission of the European Communities", although the communities themselves remained separate in legal terms.