Many people do not know, there was a movement in Myanmar to be part of India after independence. The Congress Party killed it, while midwiving the partition of India itself.
Burma was part of British India. While colonial powers proposed separation, there was plenty of resistance within Burma against this. 
The Simon Commission pushed for separation despite Burmese sentiment against it. There was actually an election held on the separation issue in which the anti-separation parties won.
Meanwhile what were Gandhi's and Nehru's views on this?
Here is Gandhi—Burma should never be part of India. (despite the fact that the Burmese people felt very close civilizational ties)
Here is Gandhi—Burma should never be part of India. (despite the fact that the Burmese people felt very close civilizational ties)
While some objected to the separation of Burma vs other provinces, Nehru overruled.
Reference (though I think the author tries to spin away INC's role in this, the source material is still relevant)
Singh, S.P. “INDIAN NATIONALISM AND BURMA.” Proceedings of the Indian History Congress, vol. 59, 1998, pp. 891–900.,
Singh, S.P. “INDIAN NATIONALISM AND BURMA.” Proceedings of the Indian History Congress, vol. 59, 1998, pp. 891–900.,
