Explanation:

Purnia district is one of the thirty-eight districts of the Indian state of Bihar. The city of Purnia is the administrative headquarters of this district. The city of Purnia has continued its tradition of hoisting the national flag at 12:07 am on every Independence Day since 1947. Purnia district is a part of Purnia Division. The district extends northwards from the Ganges river. Purnia is the unofficial capital of Seemanchal due to its financial and educational importance.

Purnia district occupies 3,229 square kilometres (1,247 sq mi),[10] comparable to the Solomon Islands' Makira Island. It is a depressed tract, consisting for the most part of a rich, loamy alluvial soil. It is traversed by several rivers flowing from the Himalayas, which afford great advantages of irrigation and water-carriage. Its major rivers are the Kosi, the Mahananda, the Suwara Kali, the Kari kosi, the Saura and the Koli. In the west, the soil is thickly covered with sand deposited by changes in the course of the Kosi. Among other rivers are the Mahananda and the Panar. Its major agricultural products are jute and banana.