The answer is: A high demand for cotton.
I think rome .rome seems like a higher state of army
It is A. Kublai Khan I just took the test and got a 100% the answers are
1 D. Marco polo
2 A. Kublai Khan
3 <span>A.Travel by land was hazardous because of difficult terrain.
</span><span><span>C.Merchants, more than anyone else, undertook long-distance travel.</span><span><span> And finally
<span>D.</span></span><span>Travelers used a variety of pack animals, including camels, horses, and yaks.</span></span></span>
A polis of ancient Greece was a a)politically independent unit that included a city and surrounding land. A polis meant the city-states which existed during ancient Greece and would stand today as what it's modern city would be called. A polis also stood as a form of identity as it would be a person's citizenship and can be used to describe a body of citizens.