How to Control Population in a Country Like India

In the future, it would be great to reunify the subcontinent into one single political entity. That would certainly boost the economy of the entire region. I don't mind having open borders with napal, which you do with silanka,. And with the butan, even mianmar, what else do we have? Wid nay pobbready have it. These nations. With them, we don't. We could have an open border kind of agreement arrangement with mianmar - there is a certain issue going on in that country. But certainly with buthan, certainly with naple, certainly with shilanka. And that would certainlyBoost the economies of those places