When did Leonidas become king of Sparta?
in 490 B.C.
King leonidas was the king of Sparta who led the famous 300 Spartans into battle agains the Persian army at Thermopolae in around 480bc. the Persian army was one of the biggest armys the ancient world had ever seen and was thought to consist of all the worlds warriors. the odds were tremendous but king leonidas and his 300 men managed to hold the Persians off for 4 days before sacrifising them selves to Sparta.
If, as I'm guessing, you mean Leonidas I of Sparta 520-480bc, then yes he was. The prophecy he received before Xerxes invasion was: "Either a king dies on the fields of Thermopylae, or Sparta will fall" Sparta I should add, was a Dinarchy, they had two consecutive kings. It was Leotychdes (The other King) who wished to travel to Thermopylae to die for Sparta, but Leonidas managed to get himself to go, thus Sparta lost…
Leonidas was a great king to Sparta. He fought against Xerxes, the Persian empire who wanted to rule. Leonidas then gathered up three hundred men and said we fight to our deaths and marched along. He was in a huge war against the Persians. They all died but Xerxes died, too. In conclusion stating that Leonidas was an amazing king who thought there was no boundaries or limits.
King Leonidas became the object of Spartan hero cult worship, and he stands as the personification of Greek bravery against overwhelming odds. His main belief was that Spartan warriors never surrender ----- Once, when someone said that Leonidas was no better than anyone else, aside from the fact that he was the king, he replied, "If I were not better than you, I would not be king." Clearly, he believed in himself as a leader.