south american world war

I'm writing this thread as i feel like "US-pliant Brazil" is way too common a trope in AH circles. I'm aiming for a conflict in a 20th century level of tech, but i've out this in Before 1900 due to the PoD. So, assume that Dom Pedro II's two legitimate sons survive beyond the 1840's, into...

There have been many wars in the South American continent. South America was always irrelevant in world history after the Latin Wars for independence. After that South America is a footnote in history books. There have been very important conflicts in the World that is South America. The War for...