The British  with their superior naval power support from home were the next who like the numerous invaders and adventurers of the past would establish their dominion in India. The diplomatic moves of East India Company were clever. The favorable conditions created by the disintegration of the Mughal empire invited the English to seek political power in India. The political aspirations of the company bore fruit from Bengal. Owing to the incompetence of Siraj-ud daula the Nawab of Bengal, he had lost the loyalty of his nobles who conspired against him. The misuse of the privileges given to the English and the fortification of the settlement invoked the displeasure of the Nawab who ordered their demolition. The inhuman act of the Nawabs subordinate resulting in the Black hole tragedy resulted in involvement of Robert Clive and Admiral Watson in an attempt to subdue the Nawab. After the capture of Calcutta by Robert Clive he entered into a treaty which proved the only advantageous solution for both at present. The diplomatic designs of Clive bore fruit when he learnt of the discontented nobles of the Nawabs who were ready to go against the authority of the Nawab .On the 23rd of the June 1757 the armies of the Nawab Siraj-ud-daula and Robert Clive met in a battle at Plassey. The Nawab's nobles who deflected as decided with the English did not support the Nawab, leading to his defeat. This was the major achievement of the English that was to act as the foundation of British rule in India. The English put Mir Jafar as the Nawab with the jurisdiction of government under the Company's control. The company got the territories around Calcutta. It raised the prestige of the company who now was able to use this to influence the French and their support at home. It also started a political gamble by the company officials who now conspired against Mir Jafar and promised the throne to Mir qasim in return for money. Mir jafar was disposed by the English and  Mir qasim was given the administration of Bengal. Mir qasim knew well the designs of the English. He was an able administrator and sought to improve the finance of the state, while meeting the demands of the company. His quarrels with the company over duties and articles and trade exposed his intention to break off from the yoke of British dominance. This ultimately resulted in the battle of Buxar in 1764. A fierce battle resulted. The superior military power of the English had confirmed the English victory and thus they became the masters of Bengal and now were the sole contenders for the control of the whole country.