The correct answer is Awadh. After the Battle of Buxar, the Nawab of Awadh ceded Allahabad and Kora to the Mughal Emperor was came under the protection of the British troops. The Battle of Buxar (1764) was the decisive battle which was fought between English Forces, and the combined army of Mir Kasim, the Nawab of Bengal, Nawab of Oudh Shah Alam II and Mughal Emperor. The battle was the outcome of the misuse of Farman and Dastak, and also the trade expansionist aspiration of English. The result of Battle of Buxar is:Mir Qasim, Shuja-Ud-Daula and Shah Alam-II lost the battle on October 22, 1764. Major Hector Munro won a decisive battle and Robert Clive had a major role in that. English became a great power in northern India. Mir Jafar (Nawab of Bengal) handed over districts of Midnapore, Burdwan and Chittagong to the English for the maintenance of their army. The English were also permitted duty-free trade in Bengal, except for a duty of two per cent on salt. Clive made political settlements with Emperor Shah Alam II and Shuja-Ud-Daula of Awadh in the Treaty of Allahabad. Additional InformationTreaty of Allahabad:Two important treaties were concluded in Allahabad between Robert Clive, Shuja-Ud-Daulah & Shah Aam-II. The of the treaty of Allahabad are given below: Treaty of Allahabad between Robert Clive & Shuja-Ud-DaulahTreaty of Allahabad between Robert Clive & Shah Alam-IIShuja had to surrender Allahabad and Kara to Shah Alam II. Shah Alam was commanded to reside at Allahabad which was ceded to him by Shuja-Ud-Daulah under the Company‚¬„¢s protection. He was made to pay Rs 50 lakh to the Company as war indemnity. The emperor had to issue a Farman granting the Diwani of Bengal, Bihar and Orissa to the East India Company in lieu of an annual payment of Rs 26 lakh. He was made to give Balwant Singh (Zamindar of Banaras) full possession of his estate. Shah Alam had to abide by a provision of Rs 53 lakh to the Company in return for the Nizamat functions (military defence, police, and administration of justice) of the said provinces.