How are differences between human races determined?

We can find differences on the Internet, but everything is so complicated there.
The European race is characterized with soft hair, fair skin, light shades of eyes and hair. Long rise. Open eyes.
The Mongoloid race is characterized by short stature, narrow eyes. Dark skin. Black eyes and hair. Coarse hair.
The Negroid race is characterized by curly hair that is breathable. Dark skin. Dark eyes and hair.
But the exception of all races are mestizo.



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