When it comes to the Iberian Union, there's much discussion about how it impacted both the countries of Portugal and Spain. However, what's often overlooked is how the Iberian Union impacted the colonial empire of Portugal. Specifically, was the Iberian Union a net good or was it negative when it comes to the expansion of the Portuguese Empire? If you have a TL without it (Sebastian doesn't die in Morocco and has a heir), would the Portuguese Empire end up smaller (Would Brazil have been allowed to expand so much without the Union?) or would it be bigger, with even more colonies throughout the Americas, Africa, Asia and possibly Oceania?