prussia pretty much reveals that most civilians that were in prussia-america were evacuated along with the military by the ships
provided with proof in documents and such, the only people who were not allowed to go were people actively rebelling against prussia, or just chose not to go
the civilians who were evacuated were offered housing at no cost, and also given the option of being listed an actual prussian
at this point i don't really care what happens anymore, most of the world is already putting it in to invade or support invading me, it makes no difference to me. SSA, under the support of ASA even, came out of nowhere with an uncalled-for invasion. prussia-america didn't have to end up becoming SSA from the start
again, the only civilians who died/got left behind were either actively resisting prussia or chose themselves not to go