As the title says, the challenge (with a POD that must be between 800 and 1500 a.d.) is to have both Spain And France end up with catalan or occitan (or a hybrid/dialect version of the 2) as the official lenguage.
Bonus point if you manage to make this lenguage spoken also in Italy and Portugal
Bonus point if you manage to make this lenguage spoken also in Italy and Portugal