The answer to your question is B-The IIiad
<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>
D. The British Army thought it would be too challenging to fight across the Appalachian Mountains.
Scarcity<span> is the fundamental challenge confronting all individuals and nations. We all face limitations... so we all have to make choices. We can't always get what we want. How we deal with these limitations—that is, how we prioritize and allocate our limited income, time, and resources—is the basic economic challenge that has confronted individuals and nations throughout history.
</span>
