What are the typical representative areas of traditional industrial areas in the world?

For example, the Ruhr area in Germany, the industrial area in central Britain, and the industrial area in the northeast of the United States. Generally, it is an industrial zone gradually developed on the basis of rich coal and iron resources, with emphasis on traditional industries such as textile, coal, steel, machinery and chemical industry. , with large industrial enterprises as the axis. In 1950s, especially after 1970s, traditional industrial areas began to decline and experienced a long-term transformation process.