1342 autumn, after a burst of heat, it suddenly rained heavily. Because the temperature is too high, completely dry soil can't absorb such a heavy rainfall. Within a few hours, all the low-lying areas were filled with water, and the river overflowed the banks. This flood was the worst flood disaster in the Middle Ages. People think that disaster is God's warning to mankind. Although a few weeks later, people's lives were calm again, people also forgot the misfortune brought by the flood. However, in many areas, floods washed away the whole arable land, which also brought about poor harvest and hunger, laying the groundwork for future plague outbreaks.
1349, Cologne citizens heard rumors that a mysterious disease was prevalent in Europe and thousands of people had died. Soon, a plague broke out in this city. By the end of the epidemic in 1350, the population of Cologne had decreased by one third. From 1347 to 1352, the plague spread in Europe. Soon people put the blame on Jews, thinking that Jews poisoned the well and caused the disease. More than 60 cities in Germany have massacred Jews. Plague killed 25 million people in Europe.
1842 In May, a fire in Hamburg almost destroyed the whole old city. More than 700 houses and landmark buildings in the city/KLOC-0 were burned down. The fire continued to burn for 4 days, causing 5 1 person to die and 20,000 people to be homeless.
From 65438 to 0854, thousands of people went to Munich to attend industrial exhibitions, including such distinguished guests as the King of Prussia. /kloc-Munich was an important trading city in the middle of 0/9th century. However, cholera broke out suddenly during the first German industrial exhibition, causing panic in the whole city. Although Max Pettenkofer was not the one who discovered the real cause of cholera, he created a new discipline in scientific research: 1865. He became the first German professor of hygiene and founded the School of Hygiene at the University of Munich.
1908, the Radport mine in Ruhr district exploded, killing 350 people. 235 women lost their husbands and 626 children lost their fathers. The cause of the accident is difficult to determine. This unfortunate incident triggered a political discussion on labor protection measures, and people especially called for the formulation of labor laws. Since then, Radport Mine has taken the lead in replacing the original gasoline safety lamp with an electric one in Germany.