Answer:
Because people did not know that yellow fever was caused by the bite of an infected mosquito, they assumed incorrectly that people could catch the disease through touch. To help control the disease, letters were cleaned with vinegar before being sent. This did not work, because it was a false cause-and-effect relationship.
Probably your thesis statement to make sure you havent strayed from your main theme
There isn’t a passage attached or anything? I’m sorry i cannot help
Answer:
the answer is 3. to record and remember information accurately
Explanation: