Answer:
To obtain food during shortages
They traded Silk, and received things like, wool, silver, gold and ivory.
Im not sure what the answer is to #1
According to Pope Urban II, the best way to get people to unite is to give them a common enemy.
Pope Urban II pitched the Crusades as a religious duty with a side of fighting.
The Black Death was most likely spread through Western Europe by rats and their fleas.
The Black Death was the second major epidemic of its time. The first known epidemic of of the disease that also caused "The Black Death" was The Plague of Justinian.
Early in the War of 1812, the governor of the Michigan territory led an attack on Canada that resulted in the surrender of Detroit. The correct option among all the options that are given in the question is the third option. It was a bad decision on the part of the governor of Michigan territory. I hope the answer helps.