Question

Why iron and steel industry is called the backbone of modern industrial economy?

Answer 1

Iron and steel industry is often referred to as the backbone of the modern industry because almost everything is either made from iron or steel or has been made using tools and machineries of these metals. It plays an important role as a basic necessity of today's economy. Materials of our day-to-day utility, from safety pins to cars, are made from steel. Without the use of iron no industry can run.

Answer 2

because everything around us comprises of iron or steel. they are the most strong and reliable materials. There are plenty of examples like -ships, trains, vehicles; all are made largely of steel.