South American Nations
The Amazon Cooperation Treaty Organization (ACTO) is an international organization aimed at the promotion of sustainable development of the Amazon Basin. Its member states are: Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname and Venezuela.
The Amazon Cooperation Treaty (ACT) was signed on 3 July 1978 and amended in 1998. ACTO was created in 1995 to strengthen the implementation of the Treaty. The Permanent Secretariat was later established in Brasilia in 2002.