Explanation:

The Revolt of 1857 gave a severe jolt to the British administration in India and made its re-organization inevitable. The Government of India’s structure and policies underwent significant changes in the decades following the Revolt.
Changes in Administration: By the Act of Parliament of 1858, the power to govern India was transferred from the East India Company to the British Crown. The authority over India, wielded by the Directors of the Company and the Board of Control, was now to be exercised by a Secretary of State for India aided by a Council.
Provincial Administration: The British had divided India for administrative convenience into provinces, three of which- Bengal. Bombay and Madras- were known as Presidencies. The Presidencies were administered by a Governor and his Executive Council of three, who were appointed by the Crown. The other provinces were administered by Lieutenant Governor and Chief Commissioners appointed by the Governor-General.
Local Bodies: Financial difficulties led the Government to further decentralize administration by promoting local government through municipalities and district boards. Local bodies like education, health, sanitation and water supply were transferred to local bodies that would finance them through local taxes.
Changes in the army: The Indian army was carefully re-organised after 1858, most of all to prevent the recurrence of another revolt. Firstly, the domination of the army by its European branch was carefully guaranteed. The proportion of Europeans to Indians in the army was raised. The European troops were kept in key geographical and military positions. The crucial branches of artillery, tanks and armored corps were put exclusively in European hands. The Indians were strictly excluded from the higher posts. Till 1814, no Indian could rise higher than the rank of a subedar. Secondly, the organization of the Indian section of the army was based on the policy of ‘divide and rule’ so as to prevent its chance of uniting again in an anti-British uprising. A new section of army like Punjabis, Gurkhas and Pathans were recruited in large numbers.