Question

Brief the historical changes of different sectors in an economy with suitable diagram

Answer 1

Answer:

Explanation:

Primary. extraction and production. agriculture.

secondary. manufacturing and processing. construction.

tertiary. service industry. healthcare. legal services. insurance and banking.

quaternary. intellectual activities. education. research. government.

Answer 2

first ,the primary sector dominates 
second, when the people have sufficient food to eat they turn to manufacturing process i.e, secondary sector
third, development of these two sectors provides various services which leads to the development of service sector

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