In 1772, Bill of the Court of Directors appointed Warren Trystings as governor of Bengal. Attempts came to Bengalis to focus on the reform of commercial and governance channels. He ended the 'Danta' system in commercial affairs. The merchants were not harmed by numerous customs stalls located in different zamindars, so that they placed five customs houses in Calcutta, Dhaka, Murshidabad, Hughli and Patna by placing those patrols. Apart from the salt, puri and tobacco, on which the company had exclusive trade rights, he reduced the duty on all goods by two and a half percent. As a result of these reforms, commodities continue to travel from one end of the country to the other. To end the Dual rule, he removed Mohammed Reza Khan and Sitab Roy from their posts from Bengal and Bihar. He entrusted the responsibility of supervising the Nawab's house to the daughter of Mir Jafar Muni Begum and appointed Raja Gurudas, son of King Nandkumar to help him. He reduced the scholarship of Nawab from 32 lakhs to 15 lakhs, and transferred the Khalsa (Treasury) from Murshidabad to Calcutta. He also stopped the payment of revenue by the Amin, and on his charge the collectors. For this purpose, he divided the country into several districts. With a few districts, one division or division was formed, and in order to keep the accounts, each dewan was appointed in the division. In order to help him, Naib Dewan was appointed by one of the districts. To achieve this objective, all the countries are divided into six divisions, namely, Kolkata, Burdwan, Dhaka, Murshidabad, Dinajpur and Patna. But in order to prevent the corruption and oppression of the revenue department, in 1781, he abolished the post of the divisional collector (then the Governor-General), appointed the local employees in their place and for the supervision of a central committee of four-member (Anderson, Shore, Chatter and Croft) of Kolkata Put the burden on. In order to improve the criminal justice system, he reformed Daroga Court, Civil and Criminal Court for civil cases. Apart from this, established two appeals courts in Calcutta - Sadar Civil Court for Civil Judgment and Sadar Nizamat Court for Criminal Justice.
The hearing of the appeals were heard by both the president and council member, and helped them in a civil case. Khalasar (Rajkosh) Dewan and Chief Kanungo, and Nazim's assistants, Qazi and Mufti and three Moulabi in criminal cases. In addition, he (1) records the court's proceedings, (2) the time limit for prosecution, (3) the defendant's property, one-fourth bright, (4) the superior right of the borrower refuses, and (5) all disputes In order to ensure that the arbitrator tries to settle down, he makes rules about it. After doing the reform of the judiciary in this way, the investigations cast fears of maintaining law and order in the country. At that time the robberies in Bangladesh were very profitable. He also repressed. In addition, he drove out the Bhutia from Koch Bihar.
