First Peloponnesian War

  • 461 BCE

    Athens breaks alliance with Sparta

    Sparta make alliance with Corinth, who Athens was not on good terms with due to Athens taking some of their land a while back
  • 460 BCE

    Megara forms alliance with Athens

    Previously they had been a Peloponnesian city-state, so this annoys Sparta. Athens builds sea walls for Megara.
  • 458 BCE

    Battle at Asopus

    The Athenian and Spartan armies meet for the first time. Athens is initially defeated, but eventually regroups and wins, and manages to hold the area for the next ten years.
  • 457 BCE

    Athens takes Aegina

    Another previously Peloponessian city-state, which again bothers Sparta
  • Period: 451 BCE to 445 BCE

    Peace of Callias

    Sparta and Athens agree to 5 years of peace
  • 445 BCE

    Thirty Years Peace

    Established between Sparta and Athens when neither of them could land a decisive blow to end the other. Concluded the first Peloponnesian war
  • 478

    Delian League Established

    Established as an alliance of greek city-states, led by Athens.