Amazon Cooperation Treaty Organization
The Amazon Cooperation Treaty Organization (ACTO) (Portuguese: Organização do Tratado de Cooperação Amazônica (OTCA)) 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.
Source: Wikipedia — Amazon Cooperation Treaty Organization (CC BY-SA 4.0)