The British used these factional divides in India to take control of the country. No one did Divide and Rule like the British.
Some anonymous Chinese bloggers have also mentioned it recently, as well.
It's worth mentioning that India's per capita income is lower than any country within the South American continent. And the U.S. brain-drains India of many of its professionals.
1"India deluged with demands for new states" - LA Times, Magnier
2"Does Beijing really want to “break up” India?" - The Hindu; Krishnan