Conversation so far:
What were the languages of the Naga people?
Naga people speak over 89 different languages and dialects, mostly unintelligible with each other.
However, there are many similarities.
Do they have any language in common?
Per Grierson's classification system, Naga languages can be grouped into Western, Central and Eastern Naga groups.
Who makes the Western Nasa groups?
The Western group includes among others Angami, Chokri, Khezha and Rengma.
Who makes the central naga groups?
The Central Naga group includes Ao, and Lotha .
Who makes the eastern Nasa group?
Eastern group includes Konyak, Phom, Sangtam, Khiamniungan, Yimchunger and Chang tribes.

Question: What was the impact of the different languages spoken?
Self-contained rewrite: What was the impact of the different languages spoken by the Naga people?