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Because it wasn't exactly the rats. It was the fleas on the rats, so it killed the rats and then the fleas moved onto a person who was either warm or alive. And they also knew that it was the rats because the rats were little stowaways on ships going to Europe.
Actually, people in the Middle Ages did not know what caused the plague. They thought people who got sick had sinned against God, or that the Devil made people sick, or perhaps it was "bad air." Back then, nobody understood the connection between rats/fleas and sickness - they used their rivers and streets as sewers, drank contaminated water, and thought that fresh air and bathing were harmful. People in the Middle Ages did exactly the wrong things, and spread the Black Death across the known world, killing millions.
Some people thought that an unusual positioning of Mars, Jupiter and Saturn had caused the plague. Others in Europe blamed the Jews, and many people pointed to witches. The UK was almost entierly Christian at the time, so they mostly went for witches and strangers as far as outsiders causing the plague was concerned.
What else can I help you with?
How did rats play a part in the spread of the black death?
rats got infected by Yersinia pestis bacterium. When they die fleas spread bacteria to humans.
What part of the world did the black plaque spread from?
Itvwas cOmmonly known as the black plauge or black death but it was really the bubonic plague and it staryed in Europe from fleas in 1347
What part of the world did the black death begin?
China
What parts of your bodydoes the black death attack?
It effected most of the body, more of the central part. Its said to say that the Black Death started by animals suddenly dying by unknown causes. The Black Plague spread by ticks,mits, and rats. So mostly the arms body and legs.
What area of Europe did the black death affected first and where did it spread from there?
The first part of Europe affected was Messina, Sicily in October 1347 when a ship avoided the Messinians, rats carrying the virus spread it throughout Sicily and then on into Europe.
What cities was not part of the Greek homeland?
Nearly 2,000 spread around the Mediterranean and Black Seas.
What is the name of the black actor in Till Death Us Do Part?
Eamonn Walker
Why was war an important part of Aztec life?
The Aztec culture spread over great areas.
What are the most important part of a space suit and why?
All parts of a space suit are important, if any part fails it can lead to the death of the astronaut.
How important was the church and religion in explaining the Black Death?
The church was a major part in explaining the black death. This is because they thought that God was punishing all the bad people in England. So when it wiped out most of the town, including the good people, they where constantly praying and telling God that they were good people and they didn't deserve to die.
What caused sheep and cattle to die during the Black Death?
Answerthey were exposed to the disease Different answer:There is a theory that the Black Death was caused in part by anthrax. In that case, anthrax would almost certainly have been the cause of death for the sheep and cattle.
What city in Europe started the Black Death?
The Black Death arrived in Europe from the east. The first part of Europe for the epidemic to break out in was Sicily, the island off southern Italy. So we can probably conclude that Palermo in Sicily was the first European city to become infected with the Black Death, although did not start it.
