But there has been American meddling, so not sure what hypothetical scenario you are trying to play with...? The countries that are furthest from America's destructive reach / the least "meddled" with are Chile and Argentina, and surprise surprise, those are the most economically and socially stable: https://en.wikipedia.org/wiki/List_of_Latin_American_countri...

Regardless, the spillage of violence and the far-reaching effects of our drug war have had a lasting effect on the entire region.