https://en.wikipedia.org/?title=IrredentismHave you ever had a strange feeling that the maps of countries are somehow not quite what you would like them to be, and that the borders should be slightly different? I'm not talking about a political belief that the borders should be changed, rather just things that have always stuck out to you as odd.
I'll give a few examples.
1. It has always bothered me that Istanbul is not called Constantinople and furthermore not part of Greece. This is despite the fact that the population transfer after the Greek-Turkish War homogenized most of the population in both regions.
2. I still feel that Poland took too much of Germany's land after WWII. Again, the same situation with the population transfer.
In both cases it would be completely unrealistic and problematic to make these changes, but somehow, for some reason it stands out to me as being incorrect. There's a word for this feeling, but I can't find online, where you have a feeling because of an ancestor's experience, and somehow it got implanted in your unconscious.