The Black Death (also known as The Black Plague or Bubonic Plague), was one of the deadliest pandemics in human history, widely thought to have been caused by a bacterium named Yersinia pestis (Plague), but recently attributed by some to other diseases.
The origins of the plague are disputed among scholars. Some historians believe the pandemic began in China or Central Asia in the late 1320s or 1330s, and during the next years merchants and soldiers carried it over the caravan routes until in 1346 it reached the Crimea in southern Russia.
Other scholars believe the plague was endemic in southern Russia. In either case, from Crimea the plague spread to Western Europe and North Africa during the 1340s. The total number of deaths worldwide is estimated at 75 million people, approximately 25 to 50 million of which occurred in Europe. The plague is thought to have returned every generation with varying virulence and mortalities until the 1700s. During this period, more than 100 plague epidemics swept across Europe.
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