The Union of South American Nations (UNASUR) is an inter-governmental-organization formed by the twelve countries of South America. The Constitutive Treaty of the bloc was signed on 23 May 2008, in Brasilia, Brazil.Its main goal is to build, in a participatory and consensual basis, a space of articulation in the cultural, social, economic and political spheres in order to develop projects and initiatives in a range of areas, such as health, education, infrastructure and the environment.To achieve the specific goals, however, the countries have committed themselves to the broader mission of reducing socioeconomic inequalities, promoting citizen participation, strengthening democracy and reducing asymmetries between and within countries, within a framework of sovereignty and independence.