What were the causes of the fourteenth century bubonic plague pandemic?

Plague, the disease caused by the bacterium Yersinia pestis, was the cause; Y. pestis infection most commonly results in bubonic plague, but can cause septicaemic or pneumonic plagues. ... In total, the plague may have reduced the world population from an estimated 475 million to 350–375 million in the 14th century.

Explanation:

the story goes that because of this belief, constantine was able to defeat his foes. constantine became an ardent1 christian. christianity and other religions were tolerated under constantine's rule. constantine also was responsible for the building of a great cathedral in rome.

should be the answer hope this

yes ap politics. what do you need?