Why don’t Europeans who live outside their homelands move to them?

After World War I, Austria lost some land to Italy. Austrians still live in it. Germany lost some land to Belgium. Germans still live in it. Hungary lost land to its neighbors; Hungarians still live in it. Why don’t those Austrians, Hermans and Hungarians move to Austria, Germany and Hungary? I am NOT saying... show more After World War I, Austria lost some land to Italy. Austrians still live in it. Germany lost some land to Belgium. Germans still live in it. Hungary lost land to its neighbors; Hungarians still live in it.

Why don’t those Austrians, Hermans and Hungarians move to Austria, Germany and Hungary? I am NOT saying that they should; I just don’t understand why they still live in that land and are minorities, 100 years later.
4 answers 4