No you just look at what the largest possible administrative borders ever were in Europe, then those 3 pop out with very large territory with what one could call a single very large exterior border. There was 0 acceptance or rejection or any other way of valueing the situation whilst any of these borders, just a look at maximum extent of administrative borders, everything else is value you imply onto it.
Close but no…
Is this some nazi fever dream? One half of the continent was at war with the other and you’re talking a about unity?
Right…
No you just look at what the largest possible administrative borders ever were in Europe, then those 3 pop out with very large territory with what one could call a single very large exterior border. There was 0 acceptance or rejection or any other way of valueing the situation whilst any of these borders, just a look at maximum extent of administrative borders, everything else is value you imply onto it.