Answer by  
                                                                                          tml4986 (195)
                                                            
                          
                          
                                                          The Black Death is the pandemic that spread through Europe, peaking in the 14th century. The bubonic plague, caused by the gram-negative bacterium Yersinia pestis, is the disease that most historians believe caused the Black Death. The bubonic plague is a disease that, while much less common, is present today.