I'm running into a small issue with my environment, the setting is about a thousand years in the future. The story revolves around several geopolitical & environmental issues. So far, except for a world government (acting only on issues affecting the planet as a whole) I've left the individual countries intact. I need to be able to refer to different countries all over the world. The major realism issue I've run into is that the chance of current countries surviving with the same names for a thousand years seems unrealistic to me. However, since there is a lot of religious & racial conflict happening also I don't want to use made up names of countries because the reader would have trouble linking country Blahblah as a Muslim region or that Whateverstan is an isolated island country (like Australia) and while racially & religiously mixed it contains it's own unique culture. Can I get away with this somewhat small plot hole?