United States. Central Intelligence Agency, The 2007 CIA World Factbook
“ Austro-Hungarian Empire were examples - but for such a large number of nation-states to cede some of their sovereignty to an overarching entity is truly unique. Although the EU is not a federation in the strict sense, it is far more than a free-trade association such as ASEAN, NAFTA, or Mercosur, and it has many of the attributes associated with independent nations: its own flag, anthem, founding date, and currency, as well as an incipient common foreign and security policy in its dealings with other nations. ”
