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>
I would say 30,000 cause all the next developments were from the 1860's forward and that is when huge growth happened, after 1860.
The last one is false I believe. Very shortly after the site was uncovered, archaeologists came to excavate it, and the year after it was discovered they started building a museum on the site. Safe to say robbers probably would've had a hard time pillaging it when the whole archaeological community had their attention fixated on it.
Answer:
A. Old Saint Peter’s Basilica
Explanation:
Geography and climate determined what kinds of crops could be grown, leading to different structures for economies and settlements.
Hope this helps