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Step-by-step explanation:
The Black Death, also known as the bubonic plague, was a pandemic that caused the deaths of millions of people in Europe during the 14th century. It is believed to have been caused by the bacterium Yersinia pestis, which is transmitted to humans through the bites of infected fleas that live on small mammals such as rats. The plague is believed to have originated in Asia and spread to Europe through trade routes and the movements of infected animals and people. The pandemic had a devastating impact on the population and economy of Europe and had long-lasting e