They didn't join the EU. They were one of the original six founding states along with France, Germany, The Netherlands, Italy and Luxembourg.
Belgium was one of the founder members, in 1957.
France, Germany, Italy, Belgium, Netherlands and Luxembourg
Eu president is from belgium :)
Monaco did not join the EU.
Original Signatories of the Treaty of Rome, establishing the Common Market: 1958
Countries in Europe should join the Eu because it makes a secure government and also the people cam access banks that are within the EU.
Brussels is the city in Belgium which is regarded as the capital of the EU.
Brussels, Belgium is the administrative centre of the EU
They were the founding members of the European Coal and Steel Comittee, a forefather to the EU, which started 1951. What was known as the European Economic Community, later the EU, was founded in 1957. Belgium, Italy, Germany, France, The Netherlands and Luxembourg were the founding members.
Brussels, Belgium
There is no country called Sami in the EU
Brussels, Belgium.