Treaties of the European Union the Functioning of the European Union (originally signed in Rome in 1957 as the Treaty establishing the European Economic Community, aka The Treaty of Rome), lay out how the EU operates, and there are a number of satellite treaties which are interconnected with them. The treaties have been repeatedly amended by other treaties over the 65 years since they were first signed. The consolidated version of the two core treaties is regularly published by the European Commission. The two principal treaties on which the EU is based are the Treaty on European Union (TEU; Maastricht Treaty, effective since 1993) and
Yugoslavia and the European Economic Community Yugoslavia and the European Economic Community From the establishment of the European Economic Community (later expanded into the European Union) in 1957 until the breakup of Yugoslavia in the early 1990’s, thus during the Cold War period, the Socialist Federal Republic of Yugoslavia was the only communist country in Eastern Europe which developed close relations with the organisation. Notwithstanding the occasional and informal proposals coming from both sides, Yugoslavia has never become a full member state of the EEC. Mutual interactions between the two sides have intensified in the late 1980’s and early 1990’s but all agreements were cut off