As long as the land is in the HRE, countries you take that are releasable will join This is a effective tool for releasing nations in small chunksĪs austria for instance you could for 20 prestiege, release Tirol (the gold province) independently so you aren't getting inflation (if you dont want to vassalise) and also release stygia. > Beneath autonomy, there should (i am not sure of DLC requirements but may require 'Art of War' or 'Common Sense') be a button to release their core land at a cost of -10 prestiege. > In your 'own' diplomacy screen, release a vassal, it should be the bottomost option, you'll have the option to release them & to play as them (which is compatible with ironman) There are two ways, both require you owning the land mecklenburg is on however and mecklenburg having a core on that province that is not expired.