Question

Disease which wiped off one third of the population in e urope in 12th century is

Answer 1

black death caused by bacterium yersinia pestis..

Answer 2

The Black Death, also known as the Great Plague, the Black Plague, or simply the Plague, was one of the most devastating pandemics in human history, resulting in the deaths of an estimated 75 to 200 millionpeople in Eurasia and peaking in Europe from 1347 to 1351.[1][2][3] The bacterium Yersinia pestis, which results in several forms of plague, is believed to have been the cause.[4]The plague created a series of religious, social and economic upheavals, which had profound effects on the course of European history.