The Treaty of Rome refers to the treaty which established the European Economic Community (EEC) and was signed by France, West Germany, Italy, Belgium, the Netherlands and Luxembourg on March 25, 1957. Its original full name was Treaty establishing the European Economic Community -- however the Treaty of Maastricht amended it and among other things removed the word "Economic" from the name of both the community and the treaty. The treaty is therefore now generally called the Treaty establishing the European Community or the EC Treaty.
Another treaty was signed the same day establishing the European Atomic Energy Community (Euratom) : their conjunction is known as the Treaties of Rome (plural). Both came into force on 1 January1958.
The original Treaty was amended by all the subsequent treaties; the Treaty of Nice sought to consolidate all treaties into one document but the EC Treaty as amended remains a single section within this, with its own article numbering.
Though the entry in force of the Treaty of Maastricht in 1993 was a further step in the direction of European integration, most decisions of the institutions of the Union are still taken on the legal basis of EC Treaty, which remains the main source of communitary legislation.
The most recent one, the draft Treaty establishing a Constitution for Europe, aims to replace all the existing Treaties with a single text and is the result of the work done by the Convention on the Future of Europe and an Intergovernmental Conference (IGC).
The Treaty of Nice, the former Treaty of the EU and the Treaty of the EC have been merged into one consolidated version.
The Treaty establishing the European Coal and Steel Community (ECSC), which was signed on 18 April 1951 in Paris, entered into force on 23 July 1952 and expired on 23 July 2002.
The Treaty of Paris, establishing the European Coal and Steel Community, which was signed on 18 April 1951, entered into force on 23 July 1952 and expired on 23 July 2002.
The Treaty establishing the European Economic Community (EEC), which was signed - along with the Euratom Treaty - in Rome on 25 March 1957, and entered into force on 1 January 1958.
The articles of the Treaty on European Union (the Maastricht Treaty), identified in that document by letters A to S, were changed into numerical form.