Northeast India when they became relatively isolated from traditional trading partners such as Bhutan and Myanmar. Many of the peoples in present-day Mizoram, Meghalaya and Nagaland converted to Christianity under the influence of British (Welsh) missionaries. In the early 19th century, both the Ahom and the Manipur kingdoms fell to a Burmese invasion. The ensuing First Anglo-Burmese War resulted in the entire region coming under British control. In the colonial period (1826–1947), North East India was made a part of Bengal Province from 1839 to 1873, when Assam became its own province. After Indian Independence from British Rule in 1947, the Northeastern
Political warfare in British colonial India by appointment, rather than election, and the councils were restricted to a consultative role. The East India Company increased its power in India by playing local rulers off against each other and the declining Mughal Empire. Lord Dalhousie, the Company Governor General between 1848 and 1856 established a principle, the Doctrine of Lapse, that if any princely state or territory under the direct influence (paramountcy) of the British East India Company would automatically be annexed if the ruler was either "manifestly incompetent or died without a direct heir". This allowed the Company to remove rulers it viewed as troublesome. After