Doctrine of Lapse under which adoption of son by rulers in the absence of their natural hairs was banned was introduced in Sub-continent?

The Doctrine of Lapse was a policy introduced by Lord Dalhousie, Governor-General of India 1848, during British rule. According to this doctrine, if a ruler of a princely state died without a natural male heir, his kingdom would be annexed by the British East India Company, even if he had adopted a son. This policy led to several annexations and was one of the causes of unrest that contributed to the 1857 War of Independence.