Dear senior economist Zahid Hasan, In developing world, turning middle income country, 2021 means to reach lower middle income country instead of upper or higher middle. Still we have long way to go to catch up higher figures in status. I think, todays volatility is tomorrow's growth. How important are external shocks in explaining growth matters required for lower middle income status? In corporating information about structural breaks in the key variables my research represent the macroeconomic transmission channels that shocks lead to a fall in industrial production and higher inflation. Otherwise, there is strong evidence of oil induced industrial slowdowns. The break should be rationalised in terms of widespread economic transformation involving a dramatic declaration in the space of productivity growth for resilent Bangladesh Economy.