The correct answer is B.
The development of cheap iron in the US was the major factor that lead to the building of skyscrapers. Being able to produce iron cheaply can be contributed to Andrew Carnegie. This American business mogul perfected the Bessemer process in several factories across the eastern part of the US. From there, he was able to sell cheap iron to American businesses for the purpose of growing their empire.
<span>What were the social factors that encouraged and promoted the Renaissance in Italy in the period from 1350 to 1500. The Italian Renaissance was one of the world’s greatest period in culture and the arts. It produced writers such as Machiavelli and artists such as Leonardo da Vinci. The political, economic and social transformation of Italy encouraged people to adopt a new world view, that fundamentally transformed Italy</span>
The Ottoman economy was disrupted by inflation, caused by the influx of precious metals into Europe from the Americas and by an increasing imbalance of trade between East and West.
