Margno wrote:Hard to expel. Extermination would really be your only option.
Hard to expel? I dunno if you've noticed, but tying people up and driving them a few hundred miles west is actually really easy.
The tricky bit is, once you've killed every last one of them, there's still nobody to pay you taxes.
There are still plenty of people left. Only loyalists to the regime and people cowed by fear would be left. Even if we assume everyone opposed to the regime opposed it, loyalists in tyrannical regimes are quite often quite numerous.