In physical anthropology, Caucasian, actually, caucasoid, is a purported race that includes most of the natives of Europe, West Asia, North Africa, and as far east as the Indian subcontinent. This category was first proposed by the German scientist Johann Friedrich Blumenbach, who coined the term in his treatise “On the Natural Varieties of Mankind” in 1775. His studies based the classification of the Caucasian race primarily on skull features, which Blumenbach claimed were optimized by the inhabitants of Georgia in the Caucasus mountains.
Quote from Blumenbach
“I gave to that variety the name of the Caucasian Mountains because it is in that region that the finest race of man is to be found, the Georgian race, and if it were possible to assign a birth place to the human race, all physiological reasons would combine to indicate that place.”
Blumenbach, De L’unité Du Genre Humain
Persians and Indians were aryans. The Kings of ancient Iran were very proud to call themselves Aryans, their rock edicts indeed say so. “I am an Aryan, the son (Puthra) of an Aryan.” This was righteous pride, because the word Aryan occurs time and again in the ancient scriptures of the Aryans - such as the Yashts (prayers to the divine elements) and the Vendidad (the law against evil).
Thank you. That was very interesting. Recent archaeological finds bear out that there was a culture of people who first transitioned from hunting to agriculture in the Caucasus region.