<span>The nation's largest railroad center was found in Chicago. Chicago is considered as the most important center of railroads in North America. Chicago has been the most significant interchange point of commercial transportation between the nation’s great railroads.</span>
Answer: George W. Young who was likely a slaveholder
Explanation:
The text presented is an advertisement that offers a reward to capture Sophia Gordon. About this woman, it is explained she is a runaway (term to refer to slaves that scaped), and also, she is "copper color", which confirms she is a black woman who likely scaped from her slaveholder. Moreover, at the end of the document, the author explains "I will give the above reward", which shows the author of this document is the slaveholder looking for Sophia. Additionally, the name George W. Young was added at the end, which is likely is the name of the slaveholder. According to this, the person who placed the advertisement is the slaveholder George W. Young
The reason that printing currency is a delegated power is because, our Nation needs to be able to trade among itself. If two states had different types of currency from one another it would make trade and travel between the states much more difficult as money from FL and NY would likely be different and likewise useless in each of the other states.