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:
The Lend-Lease Act, approved by Congress in March 1941, had given President Roosevelt virtually unlimited authority to direct material aid such as ammunition, tanks, airplanes, trucks, and food to the war effort in Europe without violating the nation's official position of neutrality.
So I believe its D
It makes sure you have the right to trial a trial, so you can't just be arrested prosecuted without a reason