Peloponnesos (Greek: Πελοπόννησος, sometime Latinized as Peloponnesus or Anglicized as The Peloponnese) is a large peninsula in Greece, forming the part of the country south of the Isthmus of Corinth.
Its name derives from the Ancient Greek Mythological Hero, 'Pelops', who supposedly conquered the entire region. Of the name, Peloponnesos, 'Pelop' refers to this hero and 'nesos' refers to island, therefore the name means the Island of Pelops. However, Peloponnesos only became a true island with the creation of the Corinthian Canal in 1893. In 2004 Peloponnesos gained a second connection to the mainland, with the completion of the Rio-Antirio bridge.
The Peloponnesian League was an alliance of states in the Peloponnese in the 6th and 5th centuries BC.
Thus the Peloponnesian League was not an "alliance" in the strictest sense of the word (nor was it wholly Peloponnesian for the entirety of its existence).
Sparta withdrew and the Peloponnesian League was refounded with Sparta's original allies, while the Hellenic League turned into the Athenian-led Delian League.
History of the Peloponnesian War is an account of the battles, conflicts, and politics of the Peloponnesian War in Ancient Greece, fought between the Peloponnesian League (led by Sparta) and the Delian League (led by Athens), written by an Athenian general who served in the war, Thucydides.
The Battle of Cyzicus in 410 BC was a small-scale naval battle during the Peloponnesian War between an Athenian fleet led by Alcibiades and a Peloponnesian fleet led by Sparta.
History of the Peloponnesian War is an account of the battles, conflicts, and politics of the Peloponnesian War, fought between the Peloponnesian League (led by Sparta) and the Delian League (led by Athens), written by an Athenian general who served in the war, Thucydides.