Answer:
C.electric power
Step-by-step explanation:
Electric power meant the industrialization of several cities that prior to this were too far away from the possible resources that made it possible for factoriues to work in a proper way, Electric current helped get the energy necessary to towns where this kind of work was not possible because of the lack of resources. Electric power and then the invention of electric engines helped the development of industry cities in the late 1800`s.