With a POD of 1550, your challenge is to make the majority of the Amazon be located in the Spanish-speaking regions, you can do this any way you want (screw Brazil, Portugal, wank Spain, Gran Colombia etc.) as long as it's not unrealistic to the point it could be considered ASB.
You don't necessarily have to use all the countries in the tags, you could have Peru control the entirety of Amazon (If that could be somehow realistic) or another entirely new country controlling it, as long as it is Spanish-speaking.
You don't necessarily have to use all the countries in the tags, you could have Peru control the entirety of Amazon (If that could be somehow realistic) or another entirely new country controlling it, as long as it is Spanish-speaking.