Ok - there's owes money, and there's owes gratitude.
I owe gratitude for the American soldiers who fought the Nazis - because if they hadn't done that I would live in a very different world. Probably I would not exist. So I am grateful to those people.
Only if you belive in reparations, that children and those who had no say are somehow bound by their country and ancestors.
And don't count eastern Europe.