Final answer:
The people of Europe believed that the Black Plague was caused by poor sanitation and bad hygiene.
Step-by-step explanation:
The people of Europe believed that the cause of the Black Plague during the late 1300s was due to poor sanitation and bad hygiene. Doctors at the time informed the public that the Plague was caused by unsanitary conditions and lack of proper hygiene practices. This belief was supported by the fact that the Plague spread rapidly in areas with crowded and unsanitary living conditions.
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