this is generally just a Brazilian state rework (de-memification). There's a Paran panhandle in the Amazonas that looks horrible, but when I edited it out, the game started crashing... what can you do?
Delete the Documents/Paradox Interactive/Victoria II/Napoleon's Legacy Remake/map folder if region borders look weird
Installation: Open your Victoria 2 game files (if you bought the game on Steam, right click on it in your library, click on properties, then on 'browse local files'), open the NLR zip file, copy the Napoleon's Legacy Remake folder and Napoleon's Legacy Remake .mod file to the /mod folder in your game files.