Answer:
The Union of South American Nations (UNASUR) is not considered as a regional alliance.
Step-by-step explanation:
The Union of South American Nations also known as (UNASUR). It came into existence around 2008 in Brasilia. It compromises of 12 countries such as Argentina, Bolivia, Chile, Columbia, Ecuador, Uruguay, Venezuela, Guyana, Paraguay, Peru, Surinam.
It was developed to address all the problems considering political or any other form for all the South American countries. The union comprises of main three bodies such as Council of Delegates , Council of Foreign Ministers, and Council of Heads of State and of Government.