I hope this will satsify you, I lost a lot more land. My country is now the same size as the purple one.
Great, now you lost your vast and fertile lands in Mato Grosso in exchange for a very mountainous region that certainly had a very different culture from your core lands, as well as a rather big native population.
DrTron, the problem was not the size of your nation: IMO, you could have all of inner Amazonia. Lands in the Andes are not only hard to reach, but also culturally very different, with other style of life etc. More than that, independent nations in inner Brazil would be almost ASB, while nations in the Andes are not.
Please, reconsider your last claims: it's not about the amount of land, but about which land you're taking. Otherwise your nation will be more a very Imperialistic regional power than a respected World Power, given the lands it have - uhnm, sounds like an interesting idea, also.