How did the Indian rulers lose their independence by singing the 'subsidiary alliance' with the british?

The subsidiary alliance was a diplomatic strategy employed by the British East India Company to gain control over Indian princely states. By signing this agreement, Indian rulers were compelled to accept British troops in their territories and relinquish their military autonomy, leading to a loss of sovereignty. Additionally, they were required to pay for the maintenance of these forces, further weakening their financial and political power. Ultimately, this system eroded their independence and facilitated British dominance over India.