Q. Which of the following introduced Subsidiary Alliance System in administration to establish the British power over Indian States?
Answer: Lord Wellesley
Notes: The doctrine of subsidiary alliance was introduced by Lord Wellesley who was the Governor General of India from 1798 to 1805. Early in his governorship Wellesley adopted a policy of non–intervention in the princely states, but he later adopted the policy of forming subsidiary alliances. This policy was to play a major role in British expansion in India.