It was the refinement of the Bessemer process, first used in the United States in the 1860s, that allowed for the major advance in skyscraper construction. As steel is stronger and lighter in weight than iron, the use of a steel frame made possible the construction of truly tall buildings.
Question-
What are some challenges of having large cities?
Answer-
Industrialization typically leads to the migration of workers to cities, automation and repetitive tasks. ... Rapid urbanization broughton by industrialization typically leads to general deterioration of workers' quality of life and many other problems for society, such as crime, stress and psychological disorders.
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Cattle drives in the western United States largely ended in the late 1800s due primarily to a combination of barbed-wire fences and the new convenience of the railroad.