When1: -13000
Who: Na-Dene
What: language
Where: Europe/Asia/Caucasia
Detail: Perhaps, Chinese, Navajo, Basque, Etruscan, and some Caucasian-Mountain languages had a common ancestor {Na-Dene language}, 15000 years ago.
Social Sciences>Linguistics>History>Language Origin
6-Linguistics-History-Language Origin
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Date Modified: 2022.0224