A highly Persianised and technical form of Urdu was the "lingua franca" of the law courts of the British administration in Bengal and the North-West Provinces & Oudh. Until the late 19th century, all proceedings and court transactions in this register of Urdu were written officially in the Persian script. In 1880, Sir Ashley Eden, the Lieutenant-Governor of Bengal in colonial India abolished the use of the Persian alphabet in the law courts of Bengal and ordered the exclusive use of Kaithi, a popular script used for both Urdu and Hindi; in the Bihar Province, the court language was Urdu written in the Kaithi script. Kaithi's association with Urdu and Hindi was ultimately eliminated by the political contest between these languages and their scripts, in which the Persian script was definitively linked to Urdu.