20 POINTS! Based on the passage and what you have learned in the lesson, write three to four sentences explaining whether dipping letters in vinegar to prevent the spread of yellow fever was a good conclusion.

From the passage, it can be deduced that because people did not know that yellow fever was a result of the bite of an infected mosquito, and it was believed that people could catch the disease through touch.
Therefore, to control the disease, letters were cleaned with vinegar before being sent. This implies that there was a negative cause and effect relationship that was depicted in this case.
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