North Bihar is a term used for the region of Bihar, India, which lies north of the Ganga river. Agriculture is the main economic activity of the region. The industries have generated considerable employment and have also been helpful in establishing a number of small industries, including a few cottage industries. The most important item that is manufactured in M…North Bihar is a term used for the region of Bihar, India, which lies north of the Ganga river. Agriculture is the main economic activity of the region. The industries have generated considerable employment and have also been helpful in establishing a number of small industries, including a few cottage industries. The most important item that is manufactured in Muzaffarpur city is the railway wagon. Barauni is the prominent industrial town of North Bihar, and Bihar state, having Barauni Refinery, Barauni Fertilizer, Barauni Carbons, a railway yard, and the Barauni thermal power station. Hajipur is also a new emerging industrial area due to its proximity with Patna leading to the development of an industrial area.