The prior post brings thoughts about similar dilemmas should the United Kingdom disaggregate with Scotland and Northern Ireland going their own ways. Or if the U.S. should split into red and blue nations.
In any of these situations there will be people “left behind” on what they perceive to be the “wrong side” of formerly insignificant borders. I wonder what the history of such “left behind” populations has been in times past?
Unlike the apocalyptic novels about a post-Rapture future, the politically left behind are a historic reality. One that has occurred many times, and bids fair to happen again in the foreseeable future.
Romans left behind in Britain or Gaul, Spaniards in Latin America, Royalists in post-colonial America, Arabs in Israel. From what I know of history, it is hard to generalize about their outcomes. Some flee, some hunker down, some assimilate, some dominate, some isolate, and some just wither away.