I might have mentioned about this before but here goes:
Sparta is the administrative region or capital of Laconia, Greece whose fierce warriors are now meme worthy thanks to the film 300. In ancient times the people of Laconia were known for expressing themselves using very few words often being blunt or pithy with their remarks. The word laconic shifted in meaning from person from Laconia to using few words or frugal with speech.
This trait is exemplified when Phillip II of Macedon chose not to attack Laconia. He sent the message
"You are advised to submit without further delay, for if I bring my army into your land, I will destroy your farms, slay your people, and raze your city."
Their laconic reply