A cikin shekarun 1960, ana kiran ƙasashen EFTA sau da yawa a matsayin Ƙasashen waje na Bakwai, sabanin Inner Six na abin da ke Ƙungiyar Tattalin Arziki ta Turai (EEC). A shekara ta 1973, tare da Birtaniya da Ireland, Denmark ta shiga Ƙungiyar Tattalin Arziki ta Turai (yanzu Tarayyar Turai) bayan wani taron jama'a. Yarjejeniyar Maastricht, wanda ya ƙunshi ƙarin haɗin kan Turai, mutanen Denmark sun ƙi shi a shekarar 1992; an karɓa ne kawai bayan wani zaben raba gardama na biyu a 1993, wanda ya ba da damar ficewa daga manufofi huɗu. Danes sun ƙi Euro a matsayin kuɗin ƙasa a cikin kuri'ar raba gardama a shekara ta 2000. Greenland ta sami mulkin kai a shekara ta 1979 kuma an ba ta 'yancin kai a shekara ta 2009.
Yarjejeniyar Maastricht