The secondary sector of the economy is the part that is primarily involved in transforming raw materials, which are typically extracted or produced by the primary sector (such as agriculture, mining, and forestry), into finished or manufactured goods. This sector encompasses a wide range of industries, including manufacturing, construction, and energy production, where raw materials are processed, assembled, and converted into products that are ready for consumption or use by other industries. Examples of activities within the secondary sector include automobile manufacturing, textile production, food processing, building construction, and the generation of electricity. The growth and development of the secondary sector were central to the Industrial Revolution and the rise of industrialised economies, playing a key role in creating jobs, driving economic growth, and producing the goods that underpin modern society.