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Answer: The Black Death was an epidemic of bubonic plague, a disease caused by the bacterium Yersinia pestis that circulates among wild rodents where they live in great numbers and density. ... Plague among humans arises when rodents in human habitation, normally black rats, become infected.
Explanation:
It's the study of how the enviroment predisposes where societies are based.
Answer:
In the election of 1800, the Federalist incumbent John Adams ran against the rising Republican Thomas Jefferson. ... Unfortunately，Jefferson and his vice-presidential running mate Aaron Burr both received the identical number of electoral votes, and the House of Representatives voted to break the tie
