Black Death

The Black Death was a plague that spread in Europe from 1346 to 1353. It was one of the worst sicknesses in human history. The disease was caused by a tiny living thing called the bacterium Yersinia pestis and spread by tiny insects called fleas.

The Black Death was a very important event in European history. It changed many things, like how people lived and worked, and how they thought about the world. The sickness was the second big problem to hit Europe during the Late Middle Ages, after the Great Famine of 1315–1317. Many people became very sick, and it took a long time for the number of people in Europe to grow back to what it was before.

Origin

The Black Death started a long time ago when a germ called Yersinia pestis appeared. It spread mostly through fleas on rats. The sickness reached Europe in 1347, probably carried by ships from Crimea to places like Constantinople, Sicily, and the Italian Peninsula. After that, it spread quickly from person to person.

Researchers found signs of the plague in Kyrgyzstan near Lake Issyk-Kul in the late 1330s, showing the germ was already there before it reached Europe.

Social and cultural impact

Effect on the Mongol Empire

The Mongol Empire, founded by Genghis Khan, was already split into four parts when the Black Death began in the 1330s. The plague disrupted important trade routes, causing the deaths of many leaders and creating political problems. This weakness helped end Mongol rule in many areas.

Chagatai Khanate (Central Asia)

The Chagatai Khanate is where evidence of the bacteria that caused the Black Death was found. This area was important for spreading the disease across Asia and into Europe because it connected the east and west through trade routes.

Golden Horde (Russia)

The Golden Horde helped spread the Black Death to Europe. In 1346, during a siege of a city called Caffa, the plague caused many deaths. This event is thought to have helped carry the disease to other parts of the world.

Ilkhanate (Persia)

The Ilkhanate in Persia faced serious problems after its leader died in 1335. Some historians believe the Black Death may have arrived there earlier than recorded, adding to these difficulties.

Yuan Dynasty (China)

In China, the Yuan Dynasty fell in 1368 partly because of the Black Death, along with other problems like famine and flooding. These issues led to a rebellion that ended Mongol rule and started the Ming Dynasty.

Effect on India

In India, there were severe disease outbreaks around 1334–1335 and 1344, but it is unclear if they were caused by the Black Death. One account describes a quick and deadly illness that affected a large part of an army, though it may have been another type of disease.

Names

European writers during the time of the Black Death called the disease many names, such as pestis or pestilentia, meaning 'pestilence'. In English, people called it the "pestilence" or "great pestilence". The name "Black Death" was not used until much later, first appearing in English in the 1750s, borrowed from Danish: den sorte død, meaning 'the black death'.

The phrase "black death" had been used in other contexts long before this. Ancient writers like Homer used it to describe dangerous forces, and it was sometimes used for other deadly diseases. Over time, the name "Black Death" became the common way to refer to this terrible time.

Previous plague epidemics

Main articles: Plague (disease) and First plague pandemic

Research shows that the plague may have made people sick in Europe and Asia thousands of years ago, even around 3000 BCE. Scientists found signs of the bacteria that causes plague in very old remains.

Later, during the time of the Roman Empire, doctors described sickness that matches what we now call bubonic plague. A big outbreak happened long ago between 541 and 549 CE, called the plague of Justinian. This was also caused by the same bacteria. It was known as the first plague pandemic.

14th-century plague

The Black Death was a terrible plague pandemic that moved through Europe from 1346 to 1353. It was caused by the bacterium Yersinia pestis, which spread mainly through fleas on rats.

People at the time had different ideas about why the plague happened. Some thought it was because of planets or because God was unhappy. Today we know that fleas with the Yersinia pestis bacterium caused it. The disease spread when rats moved into crowded towns and cities, carrying infected fleas.

The Black Death changed Europe in big ways. Many towns lost many people, which led to not enough workers. This sometimes meant workers could ask for better pay, but it also made things more expensive. The loss of people changed how society worked and may have helped start the Renaissance in Italy. The idea of quarantine began then, with cities like Dubrovnik keeping travelers away for 40 days to stop the disease from spreading.

Recurrences

Second plague pandemic

Main article: Second plague pandemic

The plague returned many times over the centuries, affecting Europe and the Mediterranean area from the 1300s to the 1600s. It appeared almost every year somewhere in Europe between 1346 and 1671. Major outbreaks happened in many years. The disease also impacted parts of Africa, the Middle East, and Asia. Many people became very sick during this time.

Third plague pandemic

Main article: Third plague pandemic

A later wave of the plague began in the mid-1800s in China and spread worldwide. It caused many deaths, especially in India. Scientists in the late 1800s discovered the bacteria that caused the disease. Australia saw outbreaks between 1900 and 1925. The first known outbreak in North America occurred in San Francisco from 1900 to 1904.

Modern-day

Today, doctors treat plague with special medicines and vaccines. There is concern that the bacteria might become resistant to these medicines, making it harder to treat. In 1995, a resistant form was found in Madagascar. With modern treatments, most people who get the plague survive, though it can still be dangerous in areas with less medical care.