That's very obvious.
I don't need to get over a war that was finished over 140 years ago - before you, I , our parents or our grandparents were even born.
If you want to stay upset because your ancestors lost a war - go ahead.
Why not get yourself riled up about the Norman Invasion of 1066 while you're at it?
Because their racist forebears continued to hold a grudge and and “stay upset.”
“Why not get yourself riled up about the Norman Invasion of 1066 while you’re at it?”
Why do that?, my ancestors WERE Normans! :)