Question

what was the grant of Diwani 1765?​

Answer 1

Their final humiliation came in 1765 when the Mughal Emperor Shah Alam granted the diwani of Bengal - the right to collect the land revenue - to the East India Company. From then on, the diwani became the main source of British revenue from India.

Answer 2

Diwani Rights were the rights granted to British East India Company to collect revenues and decide the civil cases. As soon as the war with Mir Qasim (also Mir Kasim) began, the British reinstituted Mir Jafar on the throne (1763-65). Mir Jafar died in 1765, succeeded by his minor son, Najm-ud-daulah. After signing a treaty, he too was a powerless Nawab, living off Company’s allowances, and his political and administrative powers were usurped by the Company.