They were changed from a more conseritive way of thinking to a more liberal way of thinking since they had to account for all the new types of cultures and races that were now part of their empire
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.
If there is a general favor towards certain people, if he were to select otherwise, then people would think he was biased. This would result in a bad reputation towards him, with a worst case leading to him being impeached if the public sees enough corruption.
Your role is defined as an individual.