Respuesta :
Answer:
the Mongols invading Europe.
Explanation:
the Mongol empire was not really as much of a threat to Europe as it was a century before the black death. Infact the black death led to a major reduction in warfare as most societies in Asia and the Middle East were also reeling from the effects as well.
Answer:
I think it is the third one.
Explanation:
I think that because a lot of people die which means that lives were more valued because there were of them left. Also, it couldn't be A, or d, because even after the black death, kings and nobles still existed.