Peloponnesian War

Athens Surrenders

540 BCE

Spartans defeated The Athenian Fleet at Aegospotami. This defeat led to Athenian surrender. As a result, the Peloponnesian War was concluded. Simultaneous to the end of this conflict came the end of the golden age of ancient. (National Geographic Society)
Ever since Athena's defeat, they have hated each other. (Ancient Greece times)
Fun fact: they used drachmae until 2001.

Decade of War

536 BCE

This war lasted 10 years
Led to massive destruction in Greece
End of the golden age of Greece
It would be another decade of warfare before the Spartan general Lysander defeated the Athenian fleet at Aegospotami. (National Geographic Society)

Treaty Broke

436 BCE

Hostilities resumed between Athens and Sparta with an assault launched by the Athenians at Sicily. (National Geographic Society)
Since the last experiences, they started warships.

Peace Treaty between Sparta and Athens

431 BCE

After years of open warfare, Sparta offered peace and Athens accepted. The agreement was made official with the signing of the Peace of Nicias. The treaty stated that Athens and Sparta would defend each other for the next 50 years. However, the treaty only lasted six. (National Geographic Society)