President of the European Commission three executives that were merged in 1967 following the Merger Treaty, namely the High Authority of the European Coal and Steel Community (from 1952), and the commissions of the European Atomic Energy Community and the European Economic Community (both from 1958). Secondly, a list is given over the presidents after the merger, when the single position presided over the Commission of the European Communities, until 2009 when the Treaty of Lisbon renamed of the institution, creating the President of the European Commission. The European Economic Community was established by the Treaty of Rome, presently known as the Treaty on 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,