Vanilla Brazil in Hearts of Iron IV is just plain false and ridiculous. Many mods have tried to fix it, yet, I actually did it. Introducing: VFacure's TRUE Brazi; A mod that gives Brazil a HISTORICAL focus tree, based on decisions taken by the Brazilian Government and people during WWII. It is what it promisses, it gives you the experience the actual brazil, including many buffs and actual resources.
Nerf of starting conditons, more real; Focus Tree Remake (much more dense and more/various prerequisites); Music finally fixed (if you don't want it, just delete the "mod\vfb\music" folder, but now it only plays if you are playing as Brazil). Delete all previous versions of the mod in order of this to work. I'll keep them uploaded here for non-steam players playing older-than-1.1.0 versions.