The spread of disease caused the downfall of the Mayan empire (B.) is not a historical fact, but is rather a theory developed by historians as research has been conducted of ancient American civilizations.
Answer:
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Explanation:
Answer:

Well, you can take the example of different genres of music. One person might like pop while others might be more interested in country, jazz, hip hop etc. So, what seems good for one might not seem good for others due to their tastes in different things.

Explanation:
c:producing more using fewer inputs