How did “laconic” originate?

Laconic means “brief,” “concise,” “pithy.” It is an adjective formed from Laconia, the name of an ancient Greek country of which Lacedaemon or Sparta was the capital. The Laconians and Spartans were’ noted for their pointed, brusque and sententious speech. There is a tradition that Philip of Macedon once sent the following message to the city of Sparta: “If I enter Laconia, I will level Lacedaemon to the ground.” The city fathers sent back a reply containing the single word “If.” Caesar’s Veni, vidi, via”-(“I came, saw and conquered”) is a classic example of a laconic message.