The appearance of the bubonic plague in Europe in the 14th century caused a disastrous period of change in European culture and way of life. The bubonic plague ravaged Europe, killing more than 60 percent of the population and causing a series of political, economic and social upheavals. The effects of the plague on the decimated populations of Europe led to a massive questioning of the effectiveness of political and religious leaders, a radical change in the wealth of the lower classes, and persecution. and increased discrimination against Jews and other marginalized groups. in society. In the wake of the plague, nobles and religious authorities struggled to maintain their exalted place in society, with government leaders unable to come up with an effective response to the disease and people beginning to doubt the power of the plague. 'Church. Confusion and suspicion arose among the Church's followers when the Church itself was powerless to stop these devastating, supposedly "heaven-sent" diseases. When prayer and atonement for their sins failed to heal themselves or their loved ones from this great plague, people believed that God had abandoned them, as shown by these quotes taken directly from the diary of an Italian citizen who contracted the disease. “…and nowhere is there refuge. No refuge awaits us in any part of the globe, and no hope of the much-desired salvation can be seen. Everywhere I turn my frightened eyes, their gaze is troubled by continual funerals: the churches groan, cluttered with coffins…” (Pétrach 27-31). “…it is the wrath of God…the harsh assault of the stars in their perpetually changing conjunctions. This year of plague has fallen on humanity and threatens a bloody massacre, and very charged events throughout the history of Europe. The confusion and devastating effects of the plague on the peoples of Europe led to massive questioning of the effectiveness of religious leadership and ineffective attempts by political leadership to inhibit the social growth of the lower classes, a radical change in the situation. the division of wealth in European society and increasing persecution and discrimination against Jews and other marginalized groups in society. The Black Death was a very unexpected epidemic in medieval Europe. Our modern society is still plagued by epidemics of diseases such as HIV and AIDS, swine flu [H1N1] and avian flu [H7N9], so we must take into consideration the devastating mass effect that this epidemic has had on the inhabitants of the 14th century and be ready if an epidemic of the same scale and proportion occurred again.