While wandering the city, I came across a museum of Greek War History. Inside there were different sections for different city states at the time in Greece. One of the biggest was Sparta. Sparta was a land force and dominated its opponents. They beat Athens in a war for the most powerful army in Greece. Another powerful army was Athens. They were primarily a water force so when facing Sparta, they had lots of trouble. But, Athens and Sparta at one time before their own war, came together and fought against the Persian Empire to keep from being conquered. Greece thus proved that even very small in size, they were one of the most powerful forces.