As a result of DNA testing, scientists learned the Black Death was caused by fleas on rats and vermin.
Answer: D.caused by fleas on rats and vermin.<span><span>
</span>Good luck with your studies, I hope this helps!
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Hmm I’m almost done it for you hold up
Soldiers cemetery November 19, 1863 <span />
Immigration and naturalization particularly in the 20th century have led to an increasingly to diverse.
Diverse is the right answer.
