Short answers, pulled from the story.
The Bengal War began due to tensions between the British East India Company and the Nawab of Bengal over sovereignty, taxation, and trade privileges. The conflict escalated when the Nawab Siraj ud-Daulah attacked British factories in 1756, followed by retaliatory actions from the Company that led to a series of battles.
Key leaders included the British East India Company commanders Robert Clive, Thomas Adams, John Carnac, and Hector Munro, and the Nawabs of Bengal Siraj ud-Daulah, Mir Jafar, and Mir Qasim. The Mughal Emperor Shah Alam II and the Awadhi Nawab Shuja-ud-Daula also joined the war against the British in 1764.
Major battles occurred on the 16th of June 1756 when Calcutta fell, the 23rd of June 1757 at the Battle of Plassey, and from June 1763 to May 1765 during the campaign against Mir Qasim. The decisive Battle of Buxar took place on the 23rd of October 1764, leading to the Treaty of Allahabad on the 16th of August 1765.
Significant engagements took place at Calcutta, Patna, Katwa, Takwa, Udaynala, Teliagarhi, and Buxar. The war spanned the regions of Bengal, the Gangetic Doab, and areas near Rajmahal and Kalpi.
The war ended with a British victory and the signing of the Treaty of Allahabad on the 16th of August 1765. The British East India Company gained control of the Bengal Diwani, effectively becoming the sovereign power in Bengal and Northern India while the Mughal Emperor Shah Alam II recognized their authority.