Question

how was subsidiary alliance helpful in annexation of territory​

Answer 1

Answer:

An Indian ruler entering into a subsidiary alliance with the British would accept British forces within his territory and to pay for their maintenance. ... The ruler would let the British rule on any conflict with any other state. The ruler would acknowledge the East India Company as the paramount power in India

Answer 2

Answer:

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An Indian ruler entering into a subsidiary alliance with the British would accept British forces within his territory and to pay for their maintenance. ... The ruler would let the British rule on any conflict with any other state. The ruler would acknowledge the East India Company as the paramount power in India