The correct response is:
It was a plague that travelled along the Silk Road and devastated communities and economies.
The Black Death, which occurred in the 14th century, was one of the deadliest pandemics in human history, caused primarily by the bacterium Yersinia pestis. It spread through trade routes, including the Silk Road, and led to the deaths of an estimated 25 million people in Europe alone, which was about one-third of the population at that time. Its impact was profound, leading to significant social, economic, and cultural changes, including labor shortages, shifts in power dynamics, and changes in attitudes toward medicine and religion. The aftermath of the Black Death contributed to the end of the feudal system and set the stage for the Renaissance.