Kosi division
Kosi division is an administrative geographical unit of Bihar state of India. Saharsa is the administrative headquarters of the division. Currently, the division consists of Saharsa district, Madhepura district, and Supaul district.Economy
Agriculture
It is the major product of Corn and Makhana in India. Every year tonnes of corn and makhana are exported through all part of country by Railways and Airways. Thellowing crops are grown in the region; Makhana, rice, mangoes, litchi, bamboo, mustard, corn, wheat and sugarcane. Sagwan or teak trees are now grown on a large scaleHistory
Present-day Kosi division, all of which was previously part of Saharsa district, is part of the Mithila region. Mithila first gained prominence after being settled by Indo-Aryan peoples who established the Mithila Kingdom.
During the late Vedic period, Kingdom of the Videhas became one of the major political and cultural centers of South Asia, along with Kuru and Pañcāla. The kings of the Kingdom of the Videhas were called Janakas.
The Mithila Kingdom was later incorporated into the Vajji confederacy, which had its capital in the city of Vaishali, which is also in Mithila.Language
The predominant language spoken in this region is Hindi and Maithili language. The most common dialect of Maithili used in Kosi division is Thēthi dialect.