Economic Sector

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One classical breakdown of economic activity distinguishes three sectors:^[1]

Primary: involves the retrieval and production of raw materials, such as corn, coal, wood and iron. (A coal miner, farmer or fisherman would be workers in the primary sector.)
Secondary: involves the transformation of raw or intermediate materials into goods e.g. manufacturing steel into cars, or textiles into clothing. (A builder and a dressmaker would be workers in the secondary sector.)
Tertiary: involves the supplying of services to consumers and businesses, such as baby-sitting, cinema and banking. (A shopkeeper and an accountant would be workers in the tertiary sector.)

In the 20th century, economists began to suggest that traditional tertiary services could be further distinguished from "quaternary" and quinary service sectors. Economic activity in the hypothetical quaternary sector comprises information- and knowledge-based services, while quinary services include industry related to human services and hospitality.^[2]

1 Historic evolution
2 By ownership
3 See also
industries") that evolved in successive phases:
- The ancient economy built mainly on the basis of subsistence farming.
- The industrial revolution lessened the role of subsistence farming, converting land-use to more extensive and monocultural forms of agriculture over the last three centuries. Economic growth took place mostly in the mining, construction and manufacturing industries.
- In the economies of modern consumer societies, services, finance, and technology – the knowledge economy – play an increasingly significant role.
Even in modern times, developing countries tend to rely more on the first two sectors, in contrast to developing countries tend to rely more on the first two sectors, in contrast to developed countries.

By ownership

An economy can also be divided along different lines:
- Public sector or state sector
- Private sector or privately run businesses
- Voluntary sector
See also
- Three-secto
  An economy can also be divided along different lines:
  - Public sector or state sector
  - Private sector or privately run businesses
  - Voluntary sector

By ownership

See also

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