The UK joined the European Union on 1 November 1993 when the Treaty on European Union (otherwise known as the Treaty of Maastricht) came into force.
No country could have joined before November 1993 as the European Union did not exist till the Treaty on European Union came into force.
Britain joined the European Economic Community (EEC) on January 1, 1973. The decision to join followed several years of negotiations and was part of a broader effort to enhance economic cooperation in post-war Europe. The EEC was established in 1957, and Britain's accession marked a significant shift in its economic and political alignment.
1981
Luxembourg was one of the founding members of the EEC, in 1957. The EEC became the EU on November 1st of 1993.
Britain and Denmark.
France joined the EEC in 1957 (began functions in 1958), and was a signatory to the Maastricht Treaty that established the EU in 1993.
The Netherlands was one of the founding members of the EEC, in 1957. The EEC became the EU on November 1st of 1993.
Britain is just one of 28 members. It is an important country in Europe, but the EU can function without it. What was then the EEC was formed in 1957 by six countries. Britain did not join until 1973. So it was 16 years without Britain being involved. The EEC evolved and more countries joined and it is now called the EU. The EU may need to reform as a result of the decision of Britain to leave, to change some of the reasons why Britain felt it should leave. It will take time for Britain to leave and there is even the possibility that they will decide not to.
Ireland made an application to join what was then known as the European Economic Community (EEC). Ireland's application had to be approved, which it was. Ireland joined the EEC on the 1st of January 1973. Since then, the EEC has had a few name changes and is now known as the European Union, or EU.
Cyprus, Romania, Bulgaria, and Slovakia in 2007!
In 1973 the Scottish MP's in the British Parliament voted by a 51% no vote against joining the EEC.
France was one of the primary countries that expressed reluctance about Britain's entry into the European Economic Community (EEC), the precursor to the European Union (EU), during the 1960s. French President Charles de Gaulle famously vetoed Britain's application for membership in 1963 and again in 1967, citing concerns over Britain's close ties to the United States and its impact on the balance of power within Europe. De Gaulle believed that Britain's membership would undermine the EEC's goals and priorities.
1986