Croatia held a referendum in which it voted to become a member of the European Union.

2012 Croatian European Union membership referendum

A referendum on the EU accession of the Republic of Croatia was held on 22 January 2012. Croatia finished accession (membership) negotiations on 30 June 2011 and signed the Treaty of Accession on 9 December 2011, setting it on course to become the bloc's 28th member state. The…

European Union

Supranational political and economic union

The European Union (EU) is a supranational political and economic union of 27 member states that are located primarily in Europe. The union has a total area of 4,233,255 km2 (1,634,469 sq mi) and an estimated population of over 450 million as of 2025. The EU is often described…