I just posted a 25,000 word article on SSRN entitled “Brazil, Indigenous Peoples, and the International Law of Discovery.”
I co-wrote the article with a native of Brazil. In this article, we examine the legal history of Portugal and Brazil and conclude that Portugal applied the international law Doctrine of Discovery to claim and colonize Brazil. Thereafter, the Indigenous peoples lost sovereign, property, and human rights. And Brazil continues to apply the elements of Discovery against Indigenous peoples to this day.
You can see the abstract of the paper by clicking on this link and you can get the full article for free by signing up for SSRN (it’s free to register and takes about 10 seconds) on that same link.