Cusco Declaration , formally titled Preamble to the Foundation Act of the South American Union , is a two-page declaration of intent signed by 12 South American countries during the Third South American Summit on 8 December 2004 in Cusco , Peru . It announces the foundation of the Union of South American Nations . It called for a regional parliament , a common market and a common currency
Third South American Summit
2004 South American Summit
Cusco Declaration