> e.g. I think you will find that Britain and France are culturally closer than France and Slovenia
Not sure about Slovenia but there's a lot more France here in Romania (from where I'm from) compared to the France that is present in Britain, that is if we ignore the 1200-1300s Norman direct influences. But that's a different discussion, related to how the insular Brits cannot really comprehend Napoleon's work to the fullest (as a reminder, what is now Slovenia was indeed, if even for a short period of time, under Napoleonic France, with Ljubljana being indeed the capital of what was then a French autonomous province [1])
Slovenia's also been occupied by the Romans, Bavaria, the Austria-Hungarian Empire, the Holy Roman Empire, Fascist Italy, and was part of Yugoslavia. I think any French influence is probably a bit diluted.