The <a href="https://en.wikipedia.org/wiki/Euro" id="mwAyQ" rel="mw:WikiLink" title="Euro">Euro</a> currency is introduced in 11 member nations of the <a href="https://en.wikipedia.org/wiki/European_Union" id="mwAyU" rel="mw:WikiLink" title="European Union">European Union</a> (with the exception of the United Kingdom, Denmark, Greece and Sweden).<sup about="#mwt510" class="mw-ref reference" data-mw='{"name":"ref","attrs":{"name":":0"},"body":{"id":"mw-reference-text-cite_note-:0-100"}}' id="cite_ref-:0_100-0" rel="dc:references" typeof="mw:Extension/ref"><a href="./January_1#cite_note-:0-100" id="mwAyY" style="counter-reset: mw-Ref 100;"><span class="mw-reflink-text" id="mwAyc">[100]</span></a></sup>