I had read an account of someone from a tribe conquered by Rome which outlined exactly this. He complained about how his kids were educated in the Roman way, re

I had read an account of someone from a tribe conquered by Rome which outlined exactly this. He complained about how his kids were educated in the Roman way, refused to speak the old language, identified with the new place, etc. I saw a lot of common bits to how immigrant integration as I experienced in the US (granted, immigration usually implies consent where being conquered doesn't): the cultural divide between children and parents, new national identities, etc.