Treaty of Rome in 2009, the Treaty of Lisbon renamed it the "Treaty on the Functioning of the European Union". The TFEU originated as the treaty establishing the European Economic Community (the EEC treaty), signed in Rome on 25 March 1957. On 7 February 1992, the 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
President of the European Commission Functioning of the European Union; a founding treaty of the union, which explains that the enumeration of presidents which ends with the present position starts with the first President of the Commission of the European Economic Community. The European Union is also the legal successor of the European Economic Community, or the European Community as it was named between 1993 and 2009. The establishment of the European Union in 1993 upon the entry into force of the Maastricht Treaty (formally the Treaty on European Union) did not affect the name of the position. Upon its entry into force in 2009,