What is manufacturing industry why it …

Production of goods in large quantities after processing from raw materials to more valuable products is called manufacturing. It is considered as backbone of development because:

(i) It not only helps in modernising agriculture but also forms the backbone of our economy.
(ii) Industrial development is a precondition for eradication of unemployment and poverty from our country.
(iii) Export of manufactured goods expands trade and commerce.
(iv) Countries that transform their raw materials into a wide variety of finished goods of higher value are prosperous. 

Manufacturing sector is considered the backbone of economic development because:

(i)Manufacturing industries not only help in modernising agriculture, which forms the backbone of our economy, they also reduce the heavy dependence of people on agricultural income by providing them jobs in secondary and tertiary sectors.

(ii)Industrial development is a precondition for eradication of unemployment and poverty from our country. 
(iii)It also helps in bringing down regional disparities by establishing industries in tribal and backward areas.

(iv)Export of manufactured goods expands trade and commerce, and brings in much needed foreign exchange.
(v)Countries that transform their raw materials into a wide variety of furnished goods of higher value are prosperous.