What characteristic do the members of Mercosur share in terms of location?

They are all on the same continent. Which continent are they on?

http://en.wikipedia.org/wiki/Mercosur

They are located in South America.

Right! :-)

Idk how I got here

To answer this question, we need to understand what Mercosur is and where its member countries are located.

Mercosur is a regional integration organization in South America. It stands for the Southern Common Market or Mercado Común del Sur in Spanish. The main goal of Mercosur is to promote economic and political integration among its member countries.

As of September 2021, the full members of Mercosur are Argentina, Brazil, Paraguay, and Uruguay. In addition, there are associated members, including Bolivia, Chile, Colombia, Ecuador, Guyana, Peru, and Suriname.

The characteristic that members of Mercosur share in terms of location is that they are all located in South America. Argentina, Brazil, Paraguay, and Uruguay are in the southern part of the continent, while the associated members may also have territories in other regions of South America.

Therefore, the common characteristic among the members of Mercosur is their South American location.