Multicultural India

India as a country probably contains one of the most heterogenous set of people, differing in culture, religion, language etc. This is brought out by Nita Jatar Kulkarni in her post Multi-cultural, multi-racial India. I don't know about China and the erstwhile USSR, which might have as varied a population as India.

There is an interesting debate in the comment section, on the language issue / north-south divide, of her post South India is better developed than North India says CNN IBN