... Black Death is not agreed upon by all historians. It is believed to have been originated from Central Asia. The plague was both spread by the Mongols as they expanded across Asia, and by Central Asian rodents that moved westward when ecological changes made their environment inhospitable. The plaque was first introduced to Europe in October of 1347. The Black Death was spread by Black rats infested with fleas who were host to the deadly bacterium Yersinia pestis. The plague was spreading through France and the Low Countries including Germany. By the end of that year, it had reached England, Northern Europe and Scandinavia. Eastern Europe and Russia were eventually introduced to the plague in 1357. The Bubonic plague was the most commonly seen form of Black Death. The mortality rate was 30-75%. Victims were subject to nausea, headaches, fever of 101-105 degrees, vomiting and a general feeling of illness. Causes ...

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