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.
Answer:
ang pagiging masipag ,
malikhain,magalang,mapagmahal kasipagan ng pilipino ang naging daan upang makabangon sa hirap ng buhay ang ating kawaisan ang syang naging Susi sa pagbangon
Explanation:
Between 1945 and 1960, three dozen new states in Asia and Africa<span> achieved autonomy or outright independence from their European </span>colonial<span> rulers. There was no one process of decolonization
Love Expiant~</span>
B. Tuskegee Army Air Field