 Nagamese primarily developed as a "lingua franca" due to the contact in the barter-trade centers in the plains of Assam between members of different Naga linguistic group communicating both with Assamese traders and amongst each other.This contact took place on a regular basis, allowing for the development and eventual stabilization of Nagamese.Additionally, there is evidence of language contact interactions between the indigenous, Tai-speaking Ahom rulers and various Naga groups regarding revenue and tax collection, treaty negotiation, administrative purposes, and warfare.