From the middle of the twentieth century two powers emerged the United States and the Soviet Union. What impact would there been if a third super power emerging from a union of South American states becoming powerful enough to challenge the U.S. in the western hemisphere? What form would this new country take politically? What are the most likely borders or would there be a local version of manifest destiny? With a point of departure likely sometime around 1800 what impact would this have on Europe extending beyond the obvious effects in Spain? How would this change key events in the nineteenth and twentieth centuries. What would be the ultimate impact? I am researching for a TL based on these ideas and will welcome input.