History of the European Union Europe Declaration (1951). This principle was at the heart of the European Coal and Steel Community (ECSC) (1951), the Treaty of Paris (1951), and later the Treaty of Rome (1958) which established the European Economic Community (EEC) and the European Atomic Energy Community (EAEC). Both the ECSC and EEC were later incorporated into the European Union while the EAEC maintains a distinct legal identity despite sharing members and institutions. The Maastricht Treaty (1992) created the European Union with its pillars system, including foreign and home affairs alongside the European Community. This in turn led to the creation of the single
European Economic Area idea of the EEC enlarging with more member states, as he feared that it would impede the ability of the Community to complete the internal market reform and establish the monetary union. Delors proposed a European Economic Space (EES) in January 1989, which was later renamed the European Economic Area, as it is known today. By the time the EEA was established, however, several developments hampered its credibility. First of all, Switzerland rejected the EEA agreement in a national referendum on 6 December 1992 obstructing full EU-EFTA integration within the EEA. Furthermore, Austria had applied for full EEC membership in