Primary Sector played a very important role in initial stages of development of the country. It was very prosperous in initial stages of development due to changing technique production increases but, as the country developed and need for various manufactured goods started increasing. People started engaging themselves in different manufacturing works. Factories came into existence and started expanding work force, started shifting from primary to secondary sector as a result secondary sector became most important from the point of view of employment and production of goods at cheaper rate. It is one of the signs of economic development. People have also started shifting to tertiary sector since last 100 years in developed nations.
