Which of the following was NOT a result of the bubonic plague? A. the death of one third of all Europeans.
B. the creation of jobs due to the population decreasing.
C. the waging of the Crusades

B

Explanation: there WAS a lot of death during this plague, meaning it can not be A. The Crusades, in fact, were not caused by the bubonic plague. The only possible answer left is B.

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).