European Union (nov 1, 1993 – 21h 8min, jun 17, 2025 y)

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The union and EU citizenship were established when the Maastricht Treaty came into force in 1993. The EU traces its origins to the European Coal and Steel Community (ECSC) and the European Economic Community (EEC), established, respectively, by the 1951 Treaty of Paris and 1957 Treaty of Rome. The original member states of what came to be known as the European Communities were the Inner Six: Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany. The communities and their successors have grown in size by the accession of new member states and in power by the addition of policy areas to their remit. The United Kingdom became the first member state to leave the EU on 31 January 2020. Before this, three territories of member states had left the EU or its forerunners. The latest major amendment to the constitutional basis of the EU, the Treaty of Lisbon, came into force in 2009.

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