Compare and contrast the 2 sub-regional trade groupings in South America, Mercosur, and Andean Community of Nations (CAN).

Compare and contrast the 2 sub-regional trade groupings in South America, Mercosur, and Andean Community of Nations (CAN). What are the benefits of the trade blocs and why have some South American countries decided not to belong to these RTAs? After discovering the reasons a number of South American nations choose not to join an RTA, why do you think Christians select to be considered Non-Denominational versus joining one of the plethora of Christian denominations?