The Black Death was a pandemic that killed millions of people across Europe and Asia in the 14th century. The disease was caused by the bacteria Yersinia pestis, which is found in fleas. The pandemic began in China and spread to Europe via the Silk Road. It is estimated that the Black Death killed between 30% and 60% of Europe's population.The Black Death had a profound impact on European society. It caused widespread economic and social disruption, as well as a decline in the population. The pandemic also resulted in the death of many of Europe's leading intellectuals and artists. The Black Death had a significant impact on the course of European history.