What are the three main industries?

The usual triad is the classification used by the United Nations: the primary sector includes agriculture, forestry, pastoralism, and fisheries; the secondary sector includes manufacturing, extractive industries, construction and public **** works, water, electricity, oil and gas, and pharmaceutical manufacturing; and the tertiary sector includes commerce, finance, transportation, communications, education, services, and other non-material production sectors.

Extended information:

p>1, the relationship between the three industries - interdependence, mutual constraints:

① the primary industry for the second three industries to lay the foundation;

② the secondary industry is the core of the three industries, the primary industry has a driving effect;

3 the primary and secondary industries for the tertiary industry to create the conditions for the tertiary industry, tertiary industry development to promote the progress of the primary and secondary industries.

After World War II, with the progress of social economy and science, the proportion of output value and employed persons in each sector of national economy changed constantly. The trend of change is:

At first, the proportion of the primary industry declined continuously, the proportion of the secondary industry rose continuously, and the proportion of the tertiary industry also rose continuously; then the proportion of the material production sectors including the primary and secondary industries declined to varying degrees, and the proportion of the tertiary industry continued to rise. This trend of change is more prominent in developed countries.

Till now, the proportion of output value and employed population of tertiary industry in developed countries is generally above 50%, becoming the largest and fastest-growing industry. In developing countries, except for the new industrialized countries and regions, generally speaking, the level of their industrial structure is relatively backward, and the process of transformation is not fast. But from the trend of change, developed countries and developing countries are basically the same.

China has three major industries: agriculture, industry and services.

2. Industrial structure refers to the proportion of agriculture, industry and services in a country's economic structure. Changes in industrial structure bring good market opportunities for some industries on the one hand, and threats to the survival of other industries on the other. Usually in the process of economic growth, the importance of the service industry will increase day by day, the proportion of the service industry will be expanding, and the service industry practitioners have greater market opportunities. [1]

Industrial structure, also known as the sectoral structure of the national economy. The composition of the national economy between industrial sectors and within each industrial sector. The industrial or sectoral structure of social production arises and develops on the basis of the general and special division of labor. The study of industrial structure is mainly concerned with the relationship between the two major categories of the means of production and the means of living; from the sectoral point of view, it is mainly concerned with the relationship between the sectors of agriculture, light industry, heavy industry, construction, and commercial services, as well as the internal relationship of each industrial sector.

Heightened industrial structure, also known as advanced industrial structure. It refers to the process of transferring the focus of a country's economic development or the center of gravity of its industrial structure from the primary industry to the secondary and tertiary industries one by one, marking the level of a country's economic development and the stage and direction of its development. The high level of industrial structure is often specifically reflected in the process of changes in the ratio of output value, employment and national income among various industrial sectors.

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