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I've found some threads about a surviving Kalmar Union, but couldn't find any about the opposite idea: WI the union never happened? A possible POD is that Christopher, the eldest son of Valdemar IV, survives and have issue, or Margaret I is born a male.
So, if Valdemar IV is succeeded by male heir with no claim to Sweden and Norway, what could be the immediate different developments in Scandinavia?
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