The brilliance of the hint is that it does not rule out Victoria 3.
Look for yourself:
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There was no Norway after the Congress of Vienna.
There are several posts in this thread explaining how it could still be Vicky 3. That said... it ain't. They've said it several times clearly and unambiguously, and they would probably get in hot water if they outright lied.
It still can be both Victoria III or Rome II, since on both maps there is no Norway.