Peloponnesian War 431 BCE to 404 BCE

The Assumption

433 BCE

Athens concludes an alliance with Corcyra and it begins to worry Sparta. It didn't know Athen's true intentions and feared it was becoming way too powerful. Sparta proposed peace but Athen's believed by doing so they would be accepting orders from them. This did not go to fondly with them and would lead to a war a couple years later. This is important because it shows just how scared the Spartans were of Athens.
http://www.livius.org/articles/concept/peloponnesian-war/

The Start of a War

431 BCE

The start of war is considered when Thebes attacks Platea, an ally of Athens. King Archidamos invaded Attica and bad blood was drawn. This is also considered Part 2 or the second Peloponnesian War. This is important because it showed that Sparta was not scared to start a war and that the feud was not over.
http://www.ancient.eu/Peloponnesian_War/

Peace of Nicias

421 BCE

Allowed for there to be a temporary hold on fighting in the war. It was meant to last 50 years but only lasted for a year and half. This is important because it demonstrates that Athens and Sparta could not keep to their word with each other.
http://www.historyofwar.org/articles/peace_nicias.html

Sparta allies with Persia

412 BCE

Sparta allies with Persia in 412 BCE. This helps have an advantage over Athens, for example using Persian money. This is important because by having another ally, it will help them defeat Athens. It also shows how others wanted Athens to lose.
http://www.thelatinlibrary.com/imperialism/notes/peloponnesianwar.html

Spartan Victory over Athens

404 BCE

Sparta beats Athens in an navy battle. It's a crucial moment for Sparta was known for land battles and Athens was known for naval battles. This is important because in the end, Sparta defeats Athens in their own comfort zone.
https://www.britannica.com/event/Peloponnesian-War