The 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.

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• Constitutive Treaty

• Text of the declaration (In English)
• Text of the declaration (In Spanish)

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Cusco Declaration at Wikisource (English)

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