Answer: <u>The Black Death is believed to have been the result of plague, an infectious fever caused by the bacterium Yersinia pestis. The disease was likely transmitted from rodents to humans by the bite of infected fleas.</u>
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Explanation: Bubonic plague is one of three types of plague caused by bacterium Yersinia pestis. One to seven days after exposure to the bacteria, flu-like symptoms develop. These symptoms include fever, headaches, and vomiting. Swollen and painful lymph nodes occur in the area closest to where the bacteria entered the skin. Occasionally, the swollen lymph nodes, known as buboes pictured to the right, may break open.
Also there are not in all school official recognized factors (because there are very new) like in the begining of a spread muslim emperor from the Antalya started trowing dead infected bodys from his soligers into walled citys of Byzantine Empire.
A lot of teachers should know that, so it might only help you if you put that in too.
