So most Latin American countries have tried practically every form of government known. They have been Monarchies, Republics (Central and Federal), Military Dictatorships, Dictatorships, One Party "Democracies", Democracies. Some have tried communism others have tried fascism (some both).
The list goes on and on for each country very few (Uruguay is one) have had a stable form of government for most of their lives.
There have been cliches of making a stable Latin American democracy and wanking it earlier on. Other try the monarchy approach and wank Mexico or Brazil by having the monarchies stay in power and stabilizing the country. But what could be an alternate form of government born in on country of Latin America early on? The countries which try it become stable local powers and the form of government spreads.
I was thinking that having a kind of fascism emerge early in Latin American history could sort of work. Of course this is not the european version of fascism (centered in the idea of reviving or recreating a "Roman Empire") but still an authoritarian, militaristic, somewhat left-leaning, very nationalistic government centered around the authority of a leader. If you can figure a way to "elect" the leaders peacefully each time one dies or abdicates this form of government could continue on the long run.
What other forms of government could stabilize Latin Ameirca early on.