Religious duties, keeping control of the large, restive serf population, internal and external security, and preparing for war to meet these challenges.
Because the leaders thought that a military society created more obedient and loyal citizens
Spartans most valued honor, to die in the battlefield was a great achivement
I should not have to emphasize further. Let me emphasize my most poignant points.
from what i herd most Spartans where only 14 to 18 years old
It was most likely included to emphasize a dangerous situation.
oskari
Saving humanity
Yes they did. Most Spartans died at Reach, however some Spartans (such as June), were actually missing along with Dr. Halsey.
They did both. Spartans were fierce warriors. They challenged Athens most of the time to see which was best. Spartans trained warriors, to fight. They were one of the most ferocious city's in Greece, but they had to train the warriors to fight.
Let me emphasize the most important part of my parameters to you.
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the Spartans