1347 to 1353, the plague known as the "black death" swept across Europe, killing 25 million Europeans, accounting for 1/3 of the total population of Europe at that time.
Note: It happened in the 20th century and was the worst World War II in human history. The total number of people killed by war in Europe accounts for 5% of its population. It is enough to see the disaster brought by this plague to the European people. This plague is recorded as the "Black Death" in many documents.
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/kloc-The Black Death that broke out in the middle and late 4th century also had a great influence on the development direction of European civilization. Western scholars believe that it has become a "watershed in the middle and late Middle Ages" and "marks the end of the Middle Ages". The Black Death had a great influence on the economy, politics, culture, religion and science and technology of medieval European society. Many scholars regard the Black Death as an opportunity for social transformation and development in Europe.
After the Black Death, European civilization embarked on a different road of development, a brighter road, and the social transformation that originally seemed very difficult suddenly became smooth sailing because of the Black Death. Therefore, it not only promoted the development of science and technology, but also broke the autocratic position of the Catholic Church, and had an important impact on the Renaissance, the religious reform and even the Enlightenment, thus changing the development direction of European civilization.