The correct options are
B Expansion of trade
C Helps in modernising agriculture
D Helps to overcome poverty and unemployment
When there is a growth of manufacturing industries, expansion of trade will happen. This will bring in more foreign exchange to the country. Manufacturing industries also modernise agriculture by selling products such as irrigation pumps, fertilisers, insecticides, pesticides, plastic and PVC pipes to farmers. It will reduce the poverty of country by providing employment.