Explanation:

Kishanganj, which is called the gateway of Northeast India, is the only district of Bihar where tea is cultivated, it was started in the year 1992 from 5 acres, here tea cultivation has reached 10000 acres at present in Kishanganj district. 9 private and one government tea processing plant is being run In the year 1992, in the report of the Tea Board of India, the weather of Kishanganj was described as favorable for the tea garden.