A not-very-common-but-still-present AH trope is that following one or both of the World Wars, countries like Germany or Italy (depending on which side one in the ATL) which were not yet united until fairly recently in the 19th century, were re-split into their pre-unification constituent states. Now, that seems to me pretty unlikely, because it's not like there was much separatist sentiment in any of those countries (except perhaps in specific regions), and it doesn't seem like it was really considered by anyone during the war (the Morgenthau plan doesn't really count). Nevertheless, it hasn't really been that long since those countries were united, still within living memory in WW1 and even WW2, and strong regional identities still persist to this day. So is there any likelihood for this kind of plan to ever be considered seriously?