Salinization and desertification
I would say that the Rocky Mts were the youngest of all these mountain ranges as they were created between 80-55 million years ago during the Laramide Orogeny and also they are generally much taller than the other mountain ranges mentioned here which is a characteristic of young mountain ranges and their features are sharper as they haven't been eroded the way most of these others have so have been subject to erosion for less time than the others.
Answer:When farmers are prospering, they support other sectors of India's economy through their own consumption. Products like fertilizer, working attire and tools are necessary for farmers, especially as they expand their business. This increase in expenditure directly creates jobs for others.