three type of sector primary secondary and traditional
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The Three Economic Sectors
According to the three-sector theory, all economic activity can be classified into one of three sectors: the primary sector, the secondary sector and the tertiary sector. As a rule of thumb, we say the more advanced an economy is, the more its focus shifts from the primary, through the secondary to the tertiary sector. In recent years, many economists have argued that the three-sector theory should be extended to include a quaternary sector. But before we discuss the reasoning behind this, we will look at each of the three economic sectors in more detail below.
Primary Sector
The primary sector describes all industries that are engaged in the extraction of natural resources or the production of raw materials. This includes industries such as forestry, mining, farming or fishing. The primary sector is the most basic sector because in its simplest form it does not require a lot of advanced machinery. Therefore, in traditional economies, it is usually the strongest sector in terms of employment. However, in more advanced economies, heavy machinery can be used to significantly increase efficiency and reduce the number of workers needed in primary sector industries. In other words, employment numbers in this sector tend to decrease, as economies develop. As a result, in most modern economies the primary sector only makes up about 10% of total employment.