User blog comment:Disturbedfan1100/Map Game 1.5 (or 2.5, whatever!)/@comment-24182086-20140305000237/@comment-6812733-20140305001515

Yes but those are considered as your territory still.

If you make a vassal, it will have the manpower drop but you can still control that nation. Not really useful for anything but hey, vassals are cool. All the cool nations have them!