In 1921, a national school was started in Katihar. Shri Rajendra Prasad toured Purnia district in 1921 and addressed meetings at Purnia and at other places. In 1942 Quit India Movement tactics were fully implemented by the people of Purnia. Mahatma Gandhi visited Purnia in 1929, during which time he met the Raja of Nazargunj and addressed crowded meetings at various places including Kisahnganj, Bishnupur, Araria and Purnia. The survey and settlement operations in Purnia district commenced in 1952 and settlement operations were concluded in 1960. During the 1911–20 period, Purnia suffered from epidemics of cholera every year from 1915 to 1919. A very serious outbreak of cholera occurred in 1925. Incidences of smallpox and malaria was very high during this period.