You may want to look into the genetic composition of modern-day Brazilians to consider whether "Amerindians were exterminated" is a coherent way to represent it.
edit: we are just comparing 2 completely different models here. You're not wrong about some things, you are just talking about a different thing than I :)
edit 2: you are lacking information if you think that Brazilian Amerindians did not also partner with European powers (France and the NL itself comes to mind) against the Portuguese and it's somewhat amusing that you think that Portugal was never challenged on that vast territory by other powers.
edit: we are just comparing 2 completely different models here. You're not wrong about some things, you are just talking about a different thing than I :)
edit 2: you are lacking information if you think that Brazilian Amerindians did not also partner with European powers (France and the NL itself comes to mind) against the Portuguese and it's somewhat amusing that you think that Portugal was never challenged on that vast territory by other powers.