The Treaty of Rome, officially the Treaty establishing the European Economic Community (TEEC), is an international agreement that brought about the creation of the European Economic Community (EEC), the best-known of the European Communities (EC). It was signed on 25 March 1957 by Belgium, France, Italy, Luxembourg, the Netherlands and West Germany and came into force on 1 January 1958. It remains one of the two most important treaties in the modern-day European Union (EU).
The TEEC proposed the progressive reduction of customs duties and the establishment of a customs union. It proposed to create a single market for goods, labour, services, and capital across the EEC's member states. It also proposed the creation of a Common Agriculture Policy, a Common Transport Policy and a European Social Fund, and established the European Commission.