Monsoon is considered as a unifying factor because of the following reasons:
* The peninsular plateau, under the influence of the sea from three sides, has moderate temperatures.
* The effect of monsoon on the Indian subcontinent is quite perceptible. The seasonal alteration of the wind systems and the associated weather conditions provide a rhythmic cycle of seasons.
* The flora and fauna in entire Indian landscape, agricultural calendar and the life of the people, including their festivities, revolve around this phenomenon.
* The people of India especially the farmers from north to south and from east to west, eagerly await the arrival of the monsoon. These monsoon winds bind the whole country by providing water to set the agricultural activities in motion. The river valleys which carry this water also unite as a single river valley unit.