if you are referring to the Spartans of ancient Greece then it is because of intense training, improved weapons design, tactics, and a hoplite army.
if you are referring to the spartan II's and III's in halo as of physical strength then it is because of a physical augmentation procedure called:
Muscular Enhancement Injections-Protein complex is injected intramuscularly to increase tissue density and decrease lactase recovery time
for more information on either check the halo wiki or your public or school library.
Spartans, like many Ancient Greeks, were obsessed with appearances. Men were supposed to grow up to be strong and good-looking. Likewise, woman were supposed to be healthy enough to bear children and at the same time be beautiful. Spartans were so obsessed with this image that they would inspect newborns to ensure that the babies would grow up to be strong and able citizens. Any baby that was seen as being weak or had any sort of birth defect was thrown into the Apothetae.
Helots were important because they revolted often. The average Spartan citizen had 12 helots to himself. So, the helots outnumbered the Spartans. The helots' large rebellions caused the Spartans to strenghten their army. This constant test of military ability made the Spartan military strong and powerful.
Because they where a fighting nation, and a good one at that!
Because they were from Sparta.
If the helots defeated the Spartans, the Spartans, being defeated, could not do anything to them.
Sparta most likely believed that they needed a strong army so that they could not be overthrown.
Because they were strong and powerul
the spartans had more or less a country based on slaves, where everyone was strong and the slaves did all the work
Spartans, ODST are normal humans but are pretty strong. Spartans however are trained for military at 7 years old and are biologically made to be super-soldiers.
Spartans weigh about 1,000 lbs(pounds), they run really fast, they are skilled in all kinds of weaponry, and they are super strong.
Spartans were Greek, so they spoke Greek.
yes they do because if they are not strong enough to get to their village by them self they are not strong enough
To conquer more city-states and not get raided
because so the Spartans will help military service to be stronger. Also for protection maybey they will die easier than the Spartans
The Spartans were very focused on war. The boys after the age of 7, I think, were moved to camps where they were trained. Even the girls (the female gender was very underestimated in Ancient Greece) were trained because the Spartans supported that women's bodies had to be strong so that strong children were born from them.
The Spartans used weapons so they could have extra help in war
they were focused on having a strong army. When you were 7 you went to train in the military.