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Blue eyes are the white mans.
Blue eyes are a genetic gene accrued over millennia to reflect portions of the light that goes into the iris to help humans see better at night. You see this with Types of deer like Caribou whos migratory patterns take them high into the arctic where the winters are long and dark. Brown and yellow eyes typically from africa and the far middle east and from high amounts of sunlight and longer summers, The light is refracted through the brown iris.