What is the most significant contribution of Assam for cash crop production in Indian economy?

Assam's soil been classified into three types -red loam soil, lateritic soil and alluvial soil. Assam is the single largest tea-growing region in the world. The low altitude, rich loamy soil conditions, ample rainfall and a unique climate help it to produce some of the finest orthodox leaf teas. Assam is rich in nature's bounty and a rainfall ranging from 100 to 150 inches per year - a bounty that ensures a very special place for the teas grown here. Assam tea is a popular type of black tea grown in the Indian state of Assam. This flavorful tea boasts a rich supply of plant compounds that may boost immunity, as well as heart and brain health. That said, its caffeine content may not be appropriate for everyone