Communities.
The first step in post-war integration was the European Coal and Steel Community (EC&SC), the treaty signed in Paris on 18th April 1951 (entered into force on 23 July 1952. It expired in 2002.
Another two fundamental treaties were signed in Rome in 1957 by the six original member states in order to form the European Economic Community - EEC and EURATOM Treaty (European Atomic Energy Community). These treaties, together with the very first one - European Coal and Steel Community- EC&SC, represented both the strong movement at that time in Europe towards more tense international cooperation and desire to create a “common market”. And the last but not the least is Lisbon Treaty which is an international agreement which amends the two treaties which form the constitutional basis of the European Union . The Lisbon Treaty was signed by the EU member states on 13 December 2007, and entered into force on 1 December 2009. It amends the Maastricht Treaty and the Treaty establishing the European Community (TEC; also known as the Treaty of Rome). In this process, the Rome Treaty was renamed to the Treaty on the Functioning of the European Union (TFEU).
Other important treaties:
Merger Treaty of 8 April 1965,
Single European Act of 17 February 1986,
Treaty on the European Union (TEU) of 7 February 1992,
Amsterdam Treaty of 2 October 1997, and
Nice Treaty of 26 February 2001. 1
EU enlargements
Two major political issues for the EU are European integration and enlargement.
The European Union (EU) was created by six founding states in 1957 (following the earlier establishment by the same six states of the European Coal and Steel Community in 1952) and has grown to 28 member states. There have been seven enlargements, with the largest occurring on May 1, 2004, when 10 new member states joined, followed by Bulgaria and Romania on January 1, 2007, and Croation on July