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An economy may include several sectors 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.
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.
The primary sector tends to make up a larger portion of the economy in developing countries than it does in developed countries. For example, in 2018, agriculture, forestry, and fishing comprised more than 15% of GDP in sub-Saharan Africa [4] but less than 1% of GDP in North America. [5]
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 ...
Primary sector of the economy (the raw materials industry) Secondary sector of the economy (manufacturing and construction) Tertiary sector of the economy (the "service industry") Quaternary sector of the economy (information services) Quinary sector of the economy (humanitarian services)
Economic activities can be classified in a variety of ways. 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 ...
There are many industry classifications in the modern economy, which can be grouped into larger categories called economic sectors. Sectors are broader than industry classifications. For example, the retail trade sector contains industries such as clothing stores, shoe stores, and health and personal care stores. Companies are not limited to ...
Nominal GDP sector composition, 2015 (in millions of 2005 USD): [5] [6] 2005 prices are used similarly to 2010 constant prices in which they provide economic statistics where inflation is accounted for.