Industrial city or industrial town refers to the kind of city in which the municipal economy and development are concentrated around industrial production and characterized by a large amount of factories. Industrial city is at some stage during industrialization.[1][2] Industrialization affected the internal structure of many cities, and by the end of nineteenth century shape and functions of most cities along with social relations appeared fundamentally changed. Manchester, England, is considered to be the archetype of the industrial city on the basis of Friedrich Engels' observations.[3] Industrial cities might have had gone through the period featuring pollution.[4][5][6][7]