ANTIcarrot wrote:Ah, so no more United States then?

That's correct - it's the "North American Province", remember?
ANTIcarrot wrote:It might be more trouble than its worth to split it up. And that's before you get to countries like France and Germany. There are advantages in retaining the national borders as admin areas.
I'm sure, as the "North American Province" thing goes, that they did split up the Faey administrative regions based on the pre-existing borders. I'd imagine the majority of the EU countries would have gone under one Zarina (again, re-read some of the earlier chapters for the background on this).
ANTIcarrot wrote:And what happened out of interest to all the companies, big and small? Were they all force purchased for a single credit or forced out of business in some other way?
Well, for a part answer, re-read the first part of Chapter 1.
My take on that would be that most of the organisations were simply shut down (and their staff sent off to work on farms), unless they were providing a useful service/product (So, a Mechanic shop, or Corner Store, or something like that would be kept - companies like AOL/Dell/etc would have been disbanded).
Things which would become obsolete would have their staff re-trained in new technologies as the adoption of the new technologies started.
Fel doesn't really spell out all of this - and there seems to be room for a few short stories about the period following the Faey arrival. How people reacted to the arrival, the uproar after the surrender was demanded, the further uproar when it was given, and the shock/disbelief/riots that broke out when it turned out that the Faey were telepathic.
It's hinted at that this thing happened (the Opera Theatre that Jason and Jyslin went to on their first date, for example was burnt down in riots).
Remember that as of the start of Subjugation, the Faey had been occupying Terra for about 3 years, so things had a while to settle down.