Why do most people from Scandinavian countries have blue eyes?

Are redheads with blue eyes really going extinct?

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Why are Scandinavians blonde and have blue eyes? It is believed that humans all have the same African origins. What caused them to diverge so vastly? - Quora

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Why do so many Scandinavians have blonde hair and blue eyes? - Quora

Are redheads with blue eyes really going extinct?

Are blue eyes only from Scandinavia? - Quora

Are blue eyes only from Scandinavia? - Quora

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Why do many Scandinavians have blonde hair and blue eyes? What percentage of the population are they? - Quora