European Union and West Germany signed the Treaty of Rome, which created the European Economic Community (EEC) and established a customs union. They also signed another pact creating the European Atomic Energy Community (Euratom) for co-operation in developing nuclear energy. Both treaties came into force in 1958. The EEC and Euratom were created separately from the ECSC, although they shared the same courts and the Common Assembly. The EEC was headed by Walter Hallstein (Hallstein Commission) and Euratom was headed by Louis Armand (Armand Commission) and then Étienne Hirsch. Euratom was to integrate sectors in nuclear energy while the EEC would develop
European Economic Community of the EEC upon German reunification in 1990. Following the creation of the EU in 1993, it has enlarged to include an additional sixteen countries by 2013. Member states are represented in some form in each institution. The Council is also composed of one national minister who represents their national government. Each state also has a right to one European Commissioner each, although in the European Commission they are not supposed to represent their national interest but that of the Community. Prior to 2004, the larger members (France, Germany, Italy and the United Kingdom) have had two Commissioners. In the