Answer:
Due to good price of silk in the market.
Explanation:
Rearing of silk upgrades the economic condition of individuals and the nation because silk has a high price in the market due to its demand in various industries. Silk is used in various products such as clothing, tires, parachute and surgical suture etc. When the silk is sold at good price, it automatically better the economic conditions of both the individuals who done rearing of silk and the country also earn money by export to other countries.
