Ballala Sena conquered Gaur from the Pala, became the ruler of the Bengal Delta, and made Nadia the capital as well.

In 1203–1204 AD, Bakhtiyar Khalji, a general under the Ghurid Empire, attacked and captured the capital City of Nadia.

[12][13] With the decline of the Pālas, their territory had expanded to include Vaṅga and a part of Varendra by the end of Vijayasena's reign.

The copperplate inscription is written in Sanskrit and the characters dated to about the end of the twelfth century AD.

[14] In the Asiatic Society's proceeding for January 1838, an account of the copperplate states that three villages were given to a Brahmin in the third year of Keshava Sena.

The grant was given with the landlord rights, which include the power of punishing the Chandrabhandas or Sundarbans, a tribe that lived in the forest.

The copperplate also describes the villages with smooth fields growing excellent paddy, the dancing and music in ancient Bengal, and ladies adorned with blooming flowers.

The Edilpur copperplate of Keshava Sena records that the king made a grant in favour of Nitipathaka Isvaradeva Sarman for the inside of the subha-varsha.

The conjunction ‘kapardaka-purana’ refers to a medium of exchange whose quality is equal to that of a purana or silver coin (56.6 grains), but which is actually calculated by the proportional denominator.

The table found in the traditional arithmetic of Bengal contained 1260 cowries instead of one silver coin (Purana or Dramma).

Reliable evidence of the widespread use of cowrie in early medieval Bengal has been found in excavations at Paharpur and Kalgang (Bihar near Bhagalpur).