Geographical reasons: (i) Woollen industry is a localized industry in India because India is a tropical country and has its market only in North India. (ii) It is necessary to crush sugar cane within 24 hours of harvesting because the sugar content decreases as it dries up. (iii) Sericulture flourished in Karnataka because it has favourable climate for rearing silkworms and availability of abundant soft water free from alkaline salts and iron.