How did Sakha expansion affect Paleo-Siberian language areas?

The expansion of the Sakha language into northern Siberia significantly impacted the distribution and survival of Paleo-Siberian languages. Historically, Paleo-Siberian languages were spoken over much wider territories across the Siberian north. As the Sakha moved into these regions, their influence—along with that of Tungusic-speaking groups—contributed to the contraction of these older language domains.12

The impact of this expansion is evident in several ways:

• Territorial Encroachment: The Sakha, whose domains eventually stretched as far as the areas inhabited by the Chukchi and Yukaghir, are considered culturally vigorous intruders who displaced or absorbed many Indigenous populations and their languages.32
• Linguistic Assimilation: Some groups, such as the Dolgan, are of Tungusic origin but adopted the Sakha language, further extending its reach at the expense of other linguistic traditions.13
• Vocabulary Influence: Beyond territorial displacement, the Sakha language has served as a source of loanwords for various Paleo-Siberian languages, reflecting long-term contact and the prestige of the Sakha language as a lingua franca in the region.45