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:
If you aren't great at your passion you should still keep doing it, practice makes perfect. Don't forget that. Plus no one can just ace a test without studying, or learn to play soccer without practice. If you truly care about your passion, I know you'll improve.
Explanation:
I think number 8 is B hope this helps!!:)
