What was the Great Alliance in the context of historical city-states?

The Great Alliance refers to a military and political pact among three city-states, which signifies a significant cooperation for mutual defense and political unity against common threats. Historically, such alliances were essential for city-states that faced external pressures from larger empires or rival powers. By banding together, these states could pool their resources, share military strength, and establish a unified front, enhancing their security and influence in the region.

In the context of historical city-states, this type of alliance often involved cooperative military strategies and joint decisions on political matters, enabling the members to navigate their political landscape more effectively. This cooperative framework was vital for the stability and longevity of smaller entities in a complex geopolitical environment.