The European Union was first considered on the 9th of May 1950 however the first agreement was established in 1957, between six countries: Belgium, Germany, France, Italy, Luxembourg and the Netherlands.
Throughout the years as the European Union started to expand and many other countries joined, such as Denmark, Ireland, and the United Kingdom, who joined in 1973. currently, the European Union has 28 members.
European Union is not just a single market but also a single market with no borders for trade and the Euro (€) Currency, which is used by 19 member states of the EuroZone.
The Schengen Agreement was first signed in 1985, which allows the free movement of citizens, without passport controls at borders within the Schengen Area. 21 countries within the EU are part of this Agreement.
The newest country to join the European Union is Croatia, which joined on 1 July 2013. The most recent territorial enlargement of the EU was the incorporation of Mayotte in 2014.
Europe Day is celebrated on the 9th of May, every year.
In 2020, United Kingdom left the European Union
“After the December 2019 election, the British Parliament finally ratified the withdrawal agreement. The UK left the EU at the end of 31 January 2020 CET (11 p.m. GMT).”