Why The black death killed nearly 38 million people resulting in?

The Black Death, which struck Europe in the mid-14th century, killed nearly 38 million people primarily due to the spread of the Bubonic Plague, caused by the bacterium Yersinia pestis. The disease was transmitted through fleas that infested rats, and its rapid spread was facilitated by trade routes and urban overcrowding. The social and economic disruption that followed led to labor shortages, shifts in power dynamics, and significant changes in societal structures. This catastrophic loss of life had lasting impacts on European history, culture, and the economy.