What is the rules for colonial nations taking my new colony territories?
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In the New World, I have a few core territories, two vassals I wish to annex, and a colonial subject inbetween them. I need to build a "core territory" next to the vassals to annex them, but the moment I finish colonizing a territory, it almost always becomes part of my colonial nation (I guess if it's adjacent to it?) even if it's directly adjacent to one of my core territories. For example, in the screenshot below, "New Spain" got instant ownership of Wichita when I finished colonizing Wichita, despite my core "Caddo" being immediately adjacent to it. A) I don't understand the rules for when colonizing a territory, for whether it becomes part of my nation or part of my colonial subject's nation. B) How should I core territories next to vassals in this kind o...