The prime victim , Shah Alam II , signed the Treaty of Allahabad that secured Diwani Rights for the Company to collect and manage the revenues of almost 100,000,000 acres ( 400,000 km2 ) of real estate , which form parts of the modern states of West Bengal , Odisha , Bihar , Jharkhand , and Uttar Pradesh , as es .
The Company got revenue authority ( Diwani rights ) for almost 100,000 acres of land in the modern states of West Bengal , Odisha , Bihar , Jharkhand , and Uttar Pradesh , as well as in the neighbouring areas of Bengal .