[DavidG]

Hmm interesting thoughts there. So in a nutshell when an empire surrenders it's home world would go to the empire surrendered to and all other worlds could have a random chance of say joining another empire are becoming independant. If you looking for an historical parrallel I think this could be applied to WW2 as some of the French forces overseas joined Vichy and some continued with the Allies. (I think that happend)