"Starting from the late 19th century, the steel industry underwent major changes. Technological progress triggered profound shifts in its production structure and site selection: as efficiency increased, the steel industry's demand for coal declined, and the dominant industrial factor for steel shifted from coal to iron ore."
"Moreover, factors such as transportation and markets have also had a significant impact, making it necessary for the steel industry as a whole to carry out a major transformation. Take transportation, for example: with the initial formation of the railway network and the development of highways and internal-combustion-engine vehicles, more resources began to circulate across the country's inland regions. A typical case is the development of the steel industry in New Frankfurt City, where almost all raw materials and energy come from other regions, as there is neither iron ore nor coal or other basic industrial resources locally."
