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
Convention on the association of the Netherlands Antilles with the European Economic Community Italy: Convention on the association of the Netherlands Antilles with the European Economic Community The Convention on the association of the Netherlands Antilles with the European Economic Community is an international agreement amending the Treaty establishing the European Economic Community, with the aim of awarding OCT status to the Netherlands Antilles, which was a constituent country of the Kingdom of the Netherlands from 1954 until 2010. A full treaty revision was needed because Belgium, France, Germany, Italy, and Luxembourg wanted to add a protocol on the import of refined petroleum products from the Netherlands Antilles. Because the Charter for the