BIGGEST DISASTER IN HUMAN HISTORY

The Black Death, or the Black Plague, was one of the most deadly pandemics in human history, widely thought to have been caused by a bacterium named Yersinia pestis. It probably began in Central Asia and spread to Europe by the late 1340s. The total number of deaths worldwide from the pandemic is estimated at 75 million people; there were an estimated 25-50 million deaths in Europe. The Black Death is estimated to have killed 30% to 60% of Europe's population. It may have reduced the world's population from an estimated 450 million to between 350 and 375 million in 1400.