ACP–EU development cooperation and which reflects the comparative interests of individual Member States. Beginning in 1957 (Rome Treaty) a group of 6 nations in Western Europe, France, Germany, Italy, The Netherlands, Belgium, and Luxembourg, created the European Economic Community (EEC). These member states were gradually joined by others through various waves of enlargement and became the European Union. Similarly to European expansion, at the time of the Treaty of Rome, there were a limited number of nations involved. Beginning with 18 countries and territories that had special relations with the member states, the so-called Associated States gained membership, eventually establishing the group known
Treaty on the Functioning of the European Union Maastricht treaty, which led to the formation of the European Union, saw the EEC Treaty renamed as the Treaty establishing the European Community (TEC) and renumbered. The Maastricht reforms also saw the creation of the European Union's three pillar structure, of which the European Community was the major constituent part. Following the 2005 referenda, which saw the failed attempt at launching a European Constitution, on 13 December 2007 the Lisbon treaty was signed. This saw the 'TEC' renamed as the Treaty on the Functioning of the European Union (TFEU) and, once again, renumbered. The Lisbon reforms resulted in the merging