Why was the peloponnesian war bad for the winners as well as the losers?

The Peloponnesian War divided the Greeks and made them weaker and easier to conquer. Many people died fighting and many farms were destroyed.The war made it impossible for the Greeks to unite and work together again.

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explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long  

answer; adjusting and adapting to a culture other than one's own;