The technology that we have versus theirs
<span>The Roman Empire fell for many reasons. The Roman Empire did not fall because of it's agricultural practices. The Roman Empires capacity to provide food for it's people was a true marvel of both engineering and logistics that utilized an amazing series of aquaducts, roads, and crop rotation to provide for the needs of the Empire.</span>
A and B is out because these undoubtedly are unique Chinese achievements. So is D. The Chinese are infamous for these things. Other achievements include gunpowder, fireworks, ect.
C is basically the answer because the chinese aren't the only race or country to do so. Many people have done it in the past before them and present in the terms of civilization. It isn't simply uniquely or originally from them.
Republican Party
he northern American states favored high tariffs because it made people buy American goods. As a result, the North gained money while south lost it because they bought most of their goods from Britain The south would trade England the cotton and often get cloth in return. Tariffs made it expensive