Question

In 2008, brazil initiated the formation of a 12-member supranational structure, which includes virtually all of south america. what is the name of this particular trade block

Answer 1

the name of this particular trade block was: UNASUR
UNASUR stands for Union of South American Nations. UNISUR was a form of Union that provide special regulations for its members (in which all of them located in South America) , to create a special economic trades and agreement.
One of the biggest decision of this Union was to create Bank of The South in Caracas.