Q. Who was the first Indian ruler to join the subsidiary Alliance? Answer:
The Nizam of Hyderabad
Notes: The Subsidiary Alliance System was used by Lord Wellesley (Governor General of India) to bring the Indian states within the boundary of the British political power. Under this doctrine , The Nizam of Hyderabad , the feeblest of all rulers was the first Indian ruler to accept the Subsidiary Alliance in 1798 A.D and came under the British Protection.