Why do most people from Scandinavian countries have blue eyes?

Are most Scandinavians blonde, blue-eyed, slender and good-looking or is it just a tale? - Quora

Do all Scandinavians have blue eyes and blonde hair because of their Nordic ancestry (Norse mythology)? - Quora

Red Hair, Blue Eyes: How Common Is the Genetic Combination?

These are the rarest eye colours in the world

Do all blue eyed people share a common ancestor? - The Tech Interactive

Blue Eyes: How Rare Are They?

What Are the Chances of Having Red Hair and Green Eyes?

Solved Sixty-eight people from a random sample of 128

Are blue eyes only from Scandinavia? - Quora

Nordic countries – Travel guide at Wikivoyage