Latin Draka or WMIT

We've all seen timelines which have an evil expansionist USA committing unheard of atrocities that make OTL USA look like a hippie elf commune with weed and gay marriage for all, the two most popular of which are Decades of Darkness and "What Madness is this" as a challenge i want you to border flip those timelines, where we see an Wankish Mexico, Brazil or Gran Colombia exploiting and subjugating most or all of the Americas (and maybe more) with a POD of really any time past colonization

RevPlowedtheSea is an example of big Mexico but there hasnt been a big and authoritarian Mexico in fiction (thats mainsteam at least)

So come up with a scenario and have fun