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Three sectors according to Fourastié Clark's sector model This figure illustrates the percentages of a country's economy made up by different sector. The figure illustrates that countries with higher levels of socio-economic development tend to have less of their economy made up of primary and secondary sectors and more emphasis in tertiary sectors.
Three sectors according to Fourastié Clark's sector model. One classical breakdown of economic activity distinguishes three sectors: [1] Primary: involves the retrieval and production of raw-material commodities, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the primary sector.
In economics, the business sector or corporate sector - sometimes popularly called simply "business" - is "the part of the economy made up by companies". [1] [need quotation to verify] [2] It is a subset of the domestic economy, [3] excluding the economic activities of general government, private households, and non-profit organizations serving individuals. [4]
The tertiary sector of the economy, generally known as the service sector, is the third of the three economic sectors in the three-sector model (also known as the economic cycle). The others are the primary sector (raw materials) and the secondary sector (manufacturing). The tertiary sector consists of the provision of services instead of end ...
However, since the early 2000s, businesses have shifted to surpluses in most years. Since the foreign sector has remained in surplus, the U.S. has offset this with higher budget deficits. The sum of the two components equaled 1.2% GDP in 2017, which matches the private balance in the graph showing the three sectors. [2] [11]
The four-sector model adds the foreign sector to the three-sector model. [17] [18] [23] (The foreign sector is also known as the "external sector," the "overseas sector," [19] or the "rest of the world.") Thus, the four-sector model includes (1) households, (2) firms, (3) government, and (4) the rest of the world. It excludes the financial sector.
At the top level, they are often classified according to the three-sector theory into sectors: primary (extraction and agriculture), secondary (manufacturing), and tertiary (services). Some authors add quaternary (knowledge) or even quinary (culture and research) sectors. Over time, the fraction of a society's activities within each sector changes.
Interactions between universities, industries and governments have given rise to new intermediary institutions, such as technology transfer offices and science parks, and Etzkowitz and Ledersdorff theorized the relationship between the three sectors and explained the emergence of these new hybrid organizations. [5]