Mercosur

Mercosur or Mercosul (, , Guarani: "Ñemby Ñemuha", ) is a Regional Trade Agreement (RTA) between Argentina, Brazil, Paraguay and Uruguay. It was founded in 1991. Its purpose is to improve free trade and the easy movement of goods, people, and currency. 
Members.
The following countries are full members, in the process of becoming full members, associate members or observers.