Why did europeans call the bubonic plague the black death?

The "Black Death" was a global epidemic of bubonic plague that affected Europe and Asia in the mid-1300s. People who were infected showed several horrible symptoms: they were covered in black boils, and these oozed blood and pus. The black boils that people got on their skin was the reason why this disease was named the "Black Death." Over the next few years, the disease killed almost one-third of the European population.

boundary is what it refers to hope this

explanation:

the pogroms became known as kristallnacht, the "night of shattered glass," for the shattered glass from the store windows that littered the streets. the morning after the pogroms 30,000 german jewish men were arrested for the "crime" of being jewish and sent to concentration camps, where hundreds of them perished.