Why are white people called as Caucasian although true Caucasians are genetically related to Mesopotamian people?

Some true Caucasians:
Why are white people called as Caucasian although true Caucasians are genetically related to Mesopotamian people?
Why are white people called as Caucasian although true Caucasians are genetically related to Mesopotamian people?

Why are white people called as Caucasian although true Caucasians are genetically related to Mesopotamian people?
Why are white people called as Caucasian although true Caucasians are genetically related to Mesopotamian people?
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