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IOTL the one continent that was completely spared from both World Wars was South America. What about changing that?
Specifically, I am thinking about a scenario where the Triple Alliance War grows into something much bigger and involves most South American nations, and also encompasses OTL's Chincha Islands War and ends up spilling over Europe (though there may not necessarily be fighting on the European mainland).
Can people more knowledgeable than I about South American history tell me whether this is plausible and think of PoDs that might trigger this?