It CHanged because the SPartan leader got two chicks pregnant. He didn't know what to do so he bailed and started to be the leader of another group. The society couldn't function without its leader.
By the fault
Spartan society emphasized military training, discipline, and physical fitness. Athenian society emphasized democracy, education, philosophy, and the arts.
the bectrens
The rebellion of helots in 650 B.C. caused Sparta to establish a military society. This revolution marked complete change in Spartan life.
spartan women were expected to remain out of sight and quietly raise childern.
Women
The warrior class.
We assume that Lykourgos, the Spartan law giver had created the Spartan society to be the way it is. However, as it dates that Lykourgos had lived for over 200 years, it is unsure if he is just a myth.
Sparta grew by taking over territory and converting the inhabitants into serfs who delivered half their produce to the Spartan state. So the society had different levels - the Spartiates, the perioci (livers about - non Spartan landowners) and the serfs. All the Spartan males were warriors, and as they didn't have to farm to support themselves, were able to direct themselves to military training.
You can't.
War, military, bringing their people to be the strongest and biggest army.
A member of a class of Serfs, intermediate between slaves and citizens