Why Assam differenciated into upper and lower, Not North and South Assam
History Lower Assam was historically known as the Kamrupa empire, which included the present-day districts of Kamrup metro, Kamrup, Nalbari, Barpeta, Goalpara, Darang, and Bongaigaon. At its peak, the Kamrupa kingdom included parts of Bangladesh and West Bengal, such as Rongpur and Siliguri. It was a part of the pala and varman dynasties. Later, Kamatapur was established, which was later subdivided into Cooch Behar and Cooch Hajo. The former is currently in West Bengal, while the latter is in Assam. Lower Assam's main language is Kamrupi (and its various dialects). The Kamrupi language is the ancestor of the current Assamese language as well as the Rajbanshi language. Culture Upper Assam was a part of the Chutiya kingdom, which was later absorbed by the Ahom kingdom. The ahoms' native language is nearly extinct today. They are currently speaking Assamese. Aside from linguistics, Shaktism is more prevalent in kamrupa (lower Assam), whereas Vaishnavism is more prevalent in upper