Why did Pericles' strategy fail?

The citizens of Athens stayed within an overcrowded walled city.

Sparta's navy was able to defeat the Athenian navy.

Sparta's army was able to defeat the Athenian army.

The Persians joined the Spartans.

Please help!!!!

Question

Why did Pericles' strategy fail?

 The citizens of Athens stayed within an overcrowded walled city.

 Sparta's navy was able to defeat the Athenian navy.

 Sparta's army was able to defeat the Athenian army.

 The Persians joined the Spartans.

Please help!!!!

anonymous · Answer

PLEASE!!!!!! I AM IN A TIMED QUIZ!!!!!! I WAS UP ALL NIGHT STUDYING BUT I DID NOT KNOW THIS QUESTION WAS ON HERE!!!!

anonymous · Answer

The city grew overcrowded, promoted disease, disrupted supplies. The moral of soldiers also dropped significantly.