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The black plague killed approximately 1/3 of Europe's population.
People who received the disease had black spots all over their body, hence the name "black plague". There is no immunity.
People who received the disease had black spots all over their body, hence the name "black plague". There is no immunity.
Rats crossing the trade routes of the Silk Road brought fleas carrying the disease. Fleas have the ability to live on people which was the start of the plague spreading. The fact that people lived close together and didn't bathe were also big contributors to the spread of this deadly disease.
This is an image of the route and time period of the black plaque spreading.