The correct answer to this question is A. Expressed powers. These are mentioned in the Constitution, such as print money and declare war, at a national level, whereas inherent and implied power are those which come from the interpretation of the literacy of the Constitution, in other words, those which go beyond the expressed powers.
The obstacles that were faced by the Central and Union Pacific region workers are harsh weather conditions. Thus, option C is correct.
The building of railroad network in the Central and Union Pacific region is followed with great difficulties and challenges.
<h3>What are challenges faced by the workers</h3>
The railroad was constructed at the terrain region. It is hard to deal with the conditions. The poor workers laid on mountains in the pacific region, and risk their lives with granite and explosives.
The difficulty faced by the workers of Union and Central Pacific region is the harsh weather conditions. Thus, option C is correct.
Learn more about Central Pacific, here:
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The "Supreme Law of the Land" in the United States is the Constitution. This is also referred as the "Supreme Clause".
Key philosophies<span> in the Declaration of Independence were based upon ideas first expressed by european philosophers</span>