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"Ethnicity and language are not easily linked with an archaeological signature, and the identity of the Indo-Iranians remains elusive."

Indo-Iranians
Indo-Iranians
The Indo-Iranian peoples, or Indo-Iranic peoples, also known as Aárya or Aryans from their self-designation, are a group of speakers of Indo-European languages who brought the offshoot Indo-Iranian languages to parts of Eurasia in waves from the first part of the 2nd millennium BC onwards The original location of Indo-Iranians were thought to be north of modern-day Afghanistan, east of the Caspia
"Ethnicity and language are not easily linked with an archaeological signature, and the identity of the Indo-Iranians remains elusive."
"[T]he and agreed that the essence of their shared parental Indo-Iranian identity was linguistic and ritual, not racial. If a person sacrificed to the right gods in the right way using the correct forms of the traditional hymns and poems, that person was an Aryan."
"But, in fact, very little of the illustrative archaeological material actually exhibits specific Indo-European or Indo-Iranian traits; a question therefore arises: what is the relevance of archaeological material if any sort of assemblage present at the expected or supposed time/space spot can function as the tag of a linguistic group?"