What event ended the truce between Athens and Sparta?

destroyed the Athens

Explanation:

Six years later, Athens attacked Syracuse, Sicily with all its expeditionary force and failed. The battle of Aegospotami in 405 b.C. ended the war, destroyed the Athens' fleet and ended up with its surrender one year after. The Fifty-Year Peace, also known as the Peace of Nicias was a treaty signed between Athens and Sparta in March 421 BC, this ended the first half of the Peloponnesian War.

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