About the underlined, since 1947 ( the Independence ) there is a 'Indian identity' among the common people which dare I say is a compromise culture held up by Hindu and Muslim cultures. This stands even when the are inter-state quarrels like water sharing and language usage.
The Indian military, para-military and police force are drawn up from various regions and religions locally.
But what is missing among the common people is the will to improve the country through political experiment. I will give an example that I mention a lot on the forum. Just between 1995 and 2015 more than 300,000 Indian farmers committed suicide primarily because of socio-economic reasons. In most other country the youth, especially the middle class, would have said that this was a ridiculous atrocity and risen up in revolt against the system. But in India life goes on especially for the middle class. College graduations, weddings, birth of their children, schooling and the cycle goes on. And whenever there have been progressives who have spoken up against the system, four have been killed, some jailed and others harassed and marginalized by saying that their are "anti-national".
India needs a revolution.