The answer is Food shortage.
<u>Descartes</u> was one of the first to believe that mind could affect body and vice versa and is famous for the quote “I think therefore I exist.”
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the "Great Migration," since this was a mass exodus of African Americans from the rural south to the more industrialized north, where there were many more job opportunities in cities. </span></span>
Answer: The Walls Protecting Athens. The walls protecting Athens during the Peloponnesian War. Initially Athens' strategy, as guided by Pericles, was to avoid open battle with the more numerous, and better trained Spartan hoplites, and to instead rely on Athens' superior fleet.
Explanation: Yes.