Because the Greek city-states were weak and disorganized to unite after the Peloponnesian War.
President Herbert Hoover.
People questioned Hoover's compassion, because he seemed unwillingness to provide direct relief to Americans.
Answer: In the latest study, the researchers found outbreaks of plague from 1346 through 1837 which could be explained by changes in Asian weather. ... "When the climate subsequently becomes unfavorable, it facilitates the collapse of plague-infected rodent populations forcing their fleas to find alternative hosts.
Explanation: Hope this helped :)
