Menelaus Tyndareus would support him in his courting of Tyndareus’s niece Penelope, the daughter of Icarius. Tyndareus readily agreed, and Odysseus proposed that, before the decision was made, all the suitors should swear a most solemn oath to defend the chosen husband in any quarrel. Then it was decreed that straws were to be drawn for Helen’s hand. The suitor who won was Menelaus (Tyndareus, not to displease the powerful Agamemnon offered him another of his daughters, Clytaemnestra). The rest of the suitors swore their oaths, and Helen and Menelaus were married, Menelaus becoming a ruler of Sparta with Helen after
History of Sparta Persians at the battle of Plataea. The decisive Greek victory at Plataea put an end to the Greco-Persian War along with Persian ambition of expanding into Europe. Even though this war was won by a pan-Greek army, credit was given to Sparta, who besides being the protagonist at Thermopylae and Plataea, had been the de facto leader of the entire Greek expedition. In the same year a united Greek fleet under the Spartan King, Leotychidas, won the Battle of Mycale. When this victory led to a revolt of the Ionian Greeks it was Sparta that rejected their admission to the