I would wager a guess that most smaller nations would be swallowed up by the larger ones by the time the Alliance/Coalition war breaks out. The US taking Canada (that hurts to say), Germany taking their Germanic/Nordic neighbors, Spain taking Portugal, Russia growing back to USSR size, etc. In the event of a dystopian future, I get the feeling that weaker nations would integrate into stronger ones for "protection". So as Petitioner said, I'd say that cultural regions are included with whatever sleeper ship they were closest to. That would put most central-American nations, as much flak as I'll get for this since I know they're actually not the same as Spain, in with the Hispania. And on top of that, in (Disco's?) lore, the Italia was a sleeper ship that was blown up with the original Gallia and the members of that ship were squeezed on to the Hispania.
also off topic since people keep mentioning him, Roberts had little to do with how Freelancer came out. He was only with it for 1 year out of the 4 years it was in development and it's far far different than what he was going for