Which international treaty, signed in 1957, established the European Economic Community?

The Treaty of Rome, officially the Treaty establishing the European Economic Community (TEEC), is an international agreement that led to the founding of the European Economic Community (EEC) on 1 January 1958. It was signed on 25 March 1957 by Belgium, France, Italy, Luxembourg, the Netherlands and West Germany. The word Economic was deleted from the treaty's name by the Maastricht Treaty in 1992, and the treaty was repackaged as the Treaty on the functioning of the European Union on the entry into force of the Treaty of Lisbon in 2009.

According to article one of the current Treaty of Maastricht, the European Union is the successor of the European Community.

The TEEC proposed the progressive reduction of customs duties and the establishment of a customs union. It proposed to create a common market of goods, workers, services and capital within the EEC's member states. It also proposed the creation of common transport and agriculture policies and a European social fund. It also established the European Commission.