WORLD HISTORY

Detailed explanation-1: -The European Union ( EU ) is an economic and political union of 27 countries.

Detailed explanation-2: -Croatia applied for EU membership in 2003 and was in negotiations from 2005 until 2011. On 9 December 2011 leaders from the EU and Croatia signed the accession treaty. The country became the 28th EU member country on 1 July 2013.

Detailed explanation-3: -The European Union has 28 member countries.

Detailed explanation-4: -Currently, the euro (€) is the official currency of 20 out of 27 EU member countries which together constitute the Eurozone, officially called the euro area.