The concepts of primary industry, secondary industry and tertiary industry are introduced. What are the different stages of economic development?

The primary industry refers to the production activities based on natural resources, mainly including agriculture, forestry, animal husbandry and fishery. , is the foundation of economic development. The secondary industry refers to the production activities mainly based on processing and manufacturing, mainly including machinery manufacturing, electronic information industry, chemical industry, construction industry, transportation industry, finance and insurance industry, etc. , is the pillar of economic development. The tertiary industry refers to the service-oriented production activities, mainly including commerce, tourism, education, culture, sports, entertainment, science and technology, finance, insurance, medical and health care, etc. And it is the driving force of economic development.

There are three different stages of economic development: the first stage is the traditional economy with agriculture as the mainstay, the second stage is the industrial economy with industry as the mainstay, and the third stage is the service economy with service industry as the mainstay. In the traditional economic stage, the main activity of economic development is agriculture. The main characteristics of economic development are low technical level, low efficiency, low output, low income, low investment and slow technological progress in agricultural production. In the stage of industrial economy, the main activity of economic development is industry. The main characteristics of economic development are high technical level, high efficiency, high output, high income, high investment and rapid technological progress in industrial production. In the stage of service economy, the main activity of economic development is service industry. The main characteristics of economic development are high technical level, high efficiency, high output, high income, high investment and rapid technological progress in service industry production.