This really is an old story. In 1879 my grandmother was born in Norway of a Swedish mother and a Norwegian father. She was officially Swedish, not Norwegian.
That’s bizarre... so you could never set foot in a country and be a citizen?
Both countries would have to agree on the policy or it would be moot. Unless I’m missing something, Norway can’t determine who is a Swedish citizen and Sweden can’t determine who is a Norwegian citizen. The story does not make it clear... I bet she was born in Sweden.
jw
They're always forgetting to add Nikel to the list.