Aside from defeating the French during the Seven Years' War, Robert Clive, the leader of the Company in India, defeated a key Indian ruler of Bengal at the decisive Battle of Plassey (1757), a victory that ushered in the beginning of a new period in Indian history, that of informal British rule. While still nominally the sovereign, the Mughal Indian emperor became more and more of a puppet ruler, and anarchy spread until the company stepped into the role of policeman of India. The transition to formal imperialism, characterised by Queen Victoria being crowned "Empress of India" in the 1870s was a gradual process. The first step toward cementing formal British control extended back to the late eighteenth century. The British Parliament, disturbed by the idea that a great business concern, interested primarily in profit, was controlling the destinies of millions of people, passed acts in 1773 and 1784 that gave itself the power to control company policies and to appoint the highest company official in India, the Governor-General. (This system of dual control lasted until 1858.) By 1818 the East India Company was master of all of India. Some local rulers were forced to accept its overlordship; others were deprived of their territories. Some portions of India were administered by the British directly; in others native dynasties were retained under British supervision. Until 1858, however, much of India was still officially the dominion of the Mughal emperor. Anger among some social groups, however, was seething under the governor-generalship of James Dalhousie (1847â€“1856), who annexed the Punjab (1849) after victory in the Second Sikh War, annexed seven princely states on the basis of lapse, annexed the key state of Oudh on the basis of misgovernment, and upset cultural sensibilities by banning Hindu practices such as Sati. The 1857 Sepoy Rebellion, or Indian Mutiny, an uprising initiated by Indian troops, called sepoys, who formed the bulk of the Company's armed forces, was the key turning point. Rumour had spread among them that their bullet cartridges were lubricated with pig and cow fat. The cartridges had to be bit open, so this upset the Hindu and Muslim soldiers. The Hindu religion held cows sacred, and for Muslims pork was considered Haraam. In one camp, 85 out of 90 sepoys would not accept the cartridges from their garrison officer. The British harshly punished those who would not by jailing them. The Indian people were outraged, and on May 10, 1857, sepoys marched to Delhi, and, with the help of soldiers stationed there, captured it. Fortunately for the British, many areas remained loyal and quiescent, allowing the revolt to be crushed after fierce fighting. One important consequence of the revolt was the final collapse of the Mughal dynasty. The mutiny also ended the system of dual control under which the British government and the British East India Company shared authority. The government relieved the company of its political responsibilities, and in 1858, after 258 years of existence, the company relinquished its role. Trained civil servants were recruited from graduates of British universities, and these men set out to rule India. Lord Canning (created earl in 1859), appointed Governor-General of India in 1856, became known as "Clemency Canning" as a term of derision for his efforts to restrain revenge against the Indians during the Indian Mutiny. When the Government of India was transferred from the Company to the Crown, Canning became the first viceroy of India.