Monsoon provides a very strong framework …

It is true that there is a great diversity in climatic conditions of India due to differences in relief features, altitude, location etc. However, due to south-east monsoon winds, India has primarily a monsoon type of climate all over its terrestrial areas. The whole country is influenced by the same order of seasons. The monsoonal rhythm of season is a great unifying force in India.
Monsoons control the atmosphere conditions of the country. Throughout the country, the summers are wet and winters are dry due to on-shore and off-shore winds that blow over every nook and corner of India. The distribution of rainfall is uneven. Agriculture depends upon monsoon rainfall resulting in a subsistence agriculture. Agriculture in India is a gamble on monsoons. The folk songs like Kajari of Bhojpur and Malhar of Braj (Mathura) are associated with monsoonal rains. Thus, monsoons provide a natural base for a uniformity throughout the country.