@ebbe Especially since this seems to be a so much very rare case of a map getting territory names right (you even spelled "Rumania" correctly, first TripleA game I see), I really hate to see the name "Benelux". That is a construct that I don't believe existed in a WW2 map or before (let me know if I'm wrong). I took a look at Wikipedia (of course), and it says that the term was invented in 1944 (which is several years after your starting time), but I think anyone will really associate such a name with post-WW2 reconstruction. I don't think I would use it anyways, as I don't feel it is a map name.
I think any time you have multiple countries per territory, you can just name the most important country (you have Switzerland, not Switzerland Liechtenstein), so I suggest calling the territory as "Low Countries" (instead of "Benelux").
Also, technically, "Belgium" is part of the "Low Countries", in a wider sense of the term. Besides, "Netherlands" (like Spain and a others) is a wrongly named country, that should have really been called "Northern Low Countries" since Belgium seceded.
Wondering whether Roma is in North Italy or South Italy. Anyways, North Italy was way more important than South Italy: It should be more than twice the value of South Italy.