Denmark has been an EU member country since 1st January 1973.
Denmark is a constitutional monarchy. It has a representative parliamentary system with a head of government - the prime minister - and a head of state - the monarch - who officially retains executive power, although duties are strictly representative and ceremonial. The kingdom also comprises 2 autonomous constituent countries in the Atlantic, neither of which are EU members: the Faroe Islands and Greenland.
There are 13 members of the European Parliament from Denmark.