What country joined the EU in 2013?
Explanation
Croatia joined the European Union (EU) in 2013. After gaining independence from Yugoslavia in 1991, Croatia expressed its desire to become a part of the EU. Over the years, the country underwent significant reforms and met the necessary criteria to join the EU, such as improving governance, implementing economic reforms, and ensuring the protection of human rights. Croatia's accession to the EU marked another step towards stability and integration for the country, as well as enhancing collaboration and opportunities within the European community.