Answer:
They influenced the rainfall in Indian subcontinent
Step-by-step explanation:
Monsoons refers to a change in wind direction which usually followed by the change in precipitation. Monsoons' activity will influence how much water that is carried out along with the movements of the wind which will directly affect the rate of rainfall in the continent.
Meteorologist analyze Monsoons in order to make create weather forecast that can be further used by the people in other industry in order to control their activity. (For example, farmers can use this information in order to predict the best time when they should plant the most crops)