The correct answer is " Lord Dalhousie".

• Lord Dalhousie served as Governor-General of India from 1848 to 1856.
• He introduced the passenger trains in railways in 1853, the electric telegraph in 1852, and uniform postage in 1854.
• He described all three as " Three great engines of social improvement".
• He has started engineering college in Roorkee.
• He made his summer capital Shimla.
• He is the founder of the " Public Works Department" or " PWD" in India.
• He has also served as " Governor General of Canada" or " Commander- in - chief" in India.

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• Lord Wellesley introduced Subsidiary Alliance by virtue of which the Indian kingdoms lost their sovereignty to the English during 1798.
  • Fourth Anglo Mysore was fought during the governor-generalship of Lord Wellesley.
  • During this war, Tipu Sultan died in the battle of Seringapatam in 1799.
  • Fort William College was started by Lord Wellesley in the year 1800.
• Lord Canning served as Governor-General of India from 1856 to 1862.
  • He also served as the first Viceroy of India.
  • The Mutiny of 1857, which he was able to suppress successfully,
  • Passing of Indian Councils Act, 1861 which introduced a portfolio system in India.
  • Withdrawal of the “Doctrine of Lapse” was one of the main reasons for the mutiny of 1858.
  • Introduction of the Code of Criminal Procedure.
• The Vernacular Press Act was passed in 1878 by Viceroy Lord Lytton (1876-1880).

• The doctrine of lapse was an annexation policy.
• The policy was applied by the British East India Company until 1859.
• Under this Doctrine, when the ruler of a protected state died without a natural heir, his state was not to pass to an adopted heir as sanctioned by the age-old tradition of the country.
•  It was to be annexed to the British dominions unless the adoption had been clearly approved earlier by the British authorities.