The rise of a militaristic society in ancient Sparta was primarily influenced by a. a revolt by the Helots.
The Helots were a subjugated population primarily of Messenian origin, and their revolt, known as the Messenian Wars, prompted the Spartans to develop a militaristic society to prevent further uprisings. In response, they organized their society around the needs of military training and discipline, leading to the establishment of the agoge system, which was focused on creating skilled warriors. The fear of Helot revolts continued to shape Spartan society and its institutions for generations.