<u>That is correct</u>
The most common use of the word is with the denotation of <span><em>a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
</em>It can also be used as to mean: <em>A person or thing that precipitates an event</em><em>
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In all, a catalyst is something, or someone, that causes an event to occur.
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I hope this helped! :)
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Answer: treaty of jetta :)
The man youre thinking of is Joe Jackson
Answer: In terms of disease, the Middle Ages can be regarded as beginning with the plague of 542 and ending with the Black Death (bubonic plague) of 1348. Diseases in epidemic proportions included leprosy, bubonic plague, smallpox, tuberculosis, scabies, erysipelas, anthrax, trachoma, sweating sickness, and dancing mania (see infection).
Explanation:
Hopefully this helps.
