Even before this period the polis of Sparta was the greatest military land power of classical Greek antiquity and governed, dominated or influenced the entire Peloponnese.
Additionally, the other class of working population in Spartan society were the perioeci meaning “dwellers around” who were free peoples of conquered territories.
The perioeci were allowed to maintain their own infrastructures, administrative arrangements and local economy, but had to pay tribute to Sparta and provide soldiers for the military.
[1] These three populations performed complementary functions that distinguished Sparta with a unique economic and social organization.
While the helots and the perioeci were the workforce in agriculture and industry, the Spartans could devote themselves to training, maintaining, and operating the military.
The reason for the continual strong military existence was to preserve order in Sparta and hold the large enslaved populations in check.
Lysander was the Spartan who after the end of the Peloponnesian War in 404 BC established many of the foreign pro-Spartan governments throughout the Aegean.
[4]: 128 In this establishment of a new Aegean order, many lost their lives or were exiled but on the other hand Aegina and Melos were restored to their former inhabitants.
Lysander and King Agis were for total destruction as were Sparta's leading allies Corinth and Thebes.
[3] Remaining true to the Spartan ideals of austere living practices, Agesilaus rejected the gold saying “he would rather see it in his soldier’s hands than his own.
[8] During the winter of 379/378 BC, a group of Theban exiles were able to sneak into the city and, despite the 1500-strong Spartan garrison, succeed in liberating Thebes.
Finally, the Greek city-states attempted a peace on the mainland by sending diplomats to meet with Agesilaus in Sparta.
The “Old Oligarch” argues that the polis by nature is a battlefield rather than a site of public dialogue because individuals side with their socio-economic rank.
Between 355 and 346 BC, they allied with Athens against Thebes and the Amphictyonic Council effectively pulling Theban attention away from the Peloponnese.