In OTL the United States became a by-word for democratic, republican government, while Central and South America were the source of the term "banana republic" by virtue of dictatorships that arose in the region, ironically due to American interference in some cases.
So with a POD no earlier than 1750, what set of circumstances would allow for South America to be the beacon of liberal democracy, and for everything north of, say, the Isthmus of Panama, to be renowned for dictatorships?
So with a POD no earlier than 1750, what set of circumstances would allow for South America to be the beacon of liberal democracy, and for everything north of, say, the Isthmus of Panama, to be renowned for dictatorships?