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Infected animals (rats) and people were the main vectors of Bubonic Plague in the middle ages. There was an active trading system even then with ships and cargo going from different parts of the world to multiple destinations. As there was no restrictions on peoples movement (barring access to transport) and the geographical places (for example the Americas) were relatively newly discovered the disease could spread around the world as the people moved. I don't think anyone knows for sure where the plague originated but it was probably from outside Europe and when it arived back to Western Europe due to the people having low resistance levels to the illness (much like the native Americans in the US) there was a serious loss of life.
What else can I help you with?
How did the bubonic plague disease spread from Europe to Asia?
The bubonic plague started in Asia and spread to Europe.
What disease spread quickly and killed many people in Europe?
the bubonic plague, spread by rats bitten bye infected fleas
How did bubonic plague spread?
the world was dirty
How did people become infected with the plague?
Bubonic Plague was spread by being bitten by fleas that had bitten infected rats.
Which was true of the bubonic plague?
It was spread by fleas. Apex
What spread black death?
rats infestation or spread of bubonic plague from rats.
What disease that spread in byzantine empire in 540sAD?
There was the spread of a plague but the exact nature of the plague is unknown. It is widely believed to be a strain of Bubonic Plague.
What group was responsible for the spread of the bubonic plague to Europe?
traders
Which famous historical disease did fleas help to spread?
The Bubonic Plague.
What was one human activity that contributed to the spread of the bubonic plague?
One human activity that contributed to the spread of the bubonic plague was the movement of infected rats on ships, which carried the disease from one place to another.
How is the spread of the bubonic plague different from the spread of influenza?
The bubonic plague was spread mainly by fleas traveling on the backs of rats in cities and through trade on continental Europe while the influenza spread directly from person to person in crowded public subways and gatherings.
What were the causes of the back death?
bubonic plague carried by rats and spread by fleas
