Once upon a time English was kind of imposed and was necessary to grow up and result now is that after English left, country is joined by this language or can say the literate people. Now, to unite, the rest of the majority, it is imp to have a common language and understanding. Hindi can play that role. It could have been any other language but Hindi was seleted due to no of people. Off course it is important to keep state, regional, town language but one common language will surely strengthen out unity. In Europe each country has got it's own language and fight but Switzerland have got 5 or may be more official language and nobody has got any problem.
