The Achæan League was made up of twelve small towns in the Peloponnesus, and was under the leadership of Aratus, a native of Sicyon. When a child, Aratus had seen his native city in the hands of a tyrant. His father, who was a patriot, had made a bold attempt to free the city, but had failed, and lost his life. Aratus, who was but seven years of age, heard that his father and all his family had been slain, and knew that the tyrant would try to kill him too. As he was too weak to defend himself, he sought refuge in the house of the tyrant's sister, where no one would be likely to seek for him.
This woman, touched by the child's trust, hid him cleverly, and, when all danger was over, sent him to some friends, where she paid for his board, and had him carefully brought up.
As Aratus was patriotic, he was anxious to finish the work which his father had begun. At the age of twenty, therefore, he assembled a few comrades, entered Sicyon, called all the lovers of liberty to his aid, and drove away the tyrant without shedding any blood.
The town, thus freed, joined the Achæan League, of which Aratus soon became the leader. This office was elective, and no one was expected to fill it for more than a year; but Aratus was so much loved that he was chosen leader thirty-five years in succession.
At this time, Greece and Macedon were under the rule of Antigonus Gonatas, son of Demetrius; for this man had conquered for himself the second kingdom which his father had lost. But now Aratus and the Achæan League refused to obey him, so he marched down from Macedon to restore order.
To prevent his advance, and to hinder his getting even as much as a foothold in the peninsula, Aratus wanted to capture the fortress of Acrocorinthus, which barred the Isthmus of Corinth.
This undertaking was very difficult, because the fortress was perched upon a rock so high and steep that it was almost impossible to climb it.
A traitor, Diocles, however, offered to show Aratus a way to climb this rock, provided that he should receive a certain reward. Although general of the Achæan League, and one of the greatest men of his day, Aratus was far from being rich; and, in order to obtain the required sum, he had to sell all he had, and even pawn his wife's few jewels.
Then, in the midst of the darkness, one rainy night, Diocles led the Achæan soldiers along a steep path, which they had to climb in Indian file.
He brought them safely and unseen into the fortress, where they killed most of the Macedonian sentinels, and put the guards to flight. As soon as the key of the Peloponnesus had been thus daringly won, most of the other towns in the peninsula joined the league, and the Achæans gained such victories, that Antigonus Gonatas fell ill, and died of grief.
The Achæan League became stronger and stronger; and, although Sparta and a few other cities remained neutral, most of the small towns were freed from their tyrants. Such was the importance of the league, that the Roman ambassadors once came to ask for its aid to suppress the pirates who infested the neighboring seas.
This help was cheerfully given, and the Achæans entered into a treaty with the Romans. They little suspected, however, that the city whose name was then almost unknown would in less than a hundred years become strong enough to subdue them, and be mistress over all Greece.
Division in Sparta
While the Achæan League was doing its best to restore Greece to its former power, Sparta had remained inactive. The Spartans had changed greatly since the days of Lycurgus. They no longer obeyed his wise laws, and, instead of being brave and frugal, they were greedy, lazy, and wicked.
One of their kings was named Leonidas; but he was in no way like his great namesake, the king who had fallen at Thermopylæ. Indeed, he married an Eastern wife, and to please her assumed all the pomp and led the idle life of an Eastern king.
His fellow-king, on the other hand, was such a miser that he heaped up great treasures. When he died, his wife and mother were said to have more gold than the city and people together. The miser king was succeeded by his son, but this young man's sole ambition was to restore Sparta to its former condition.
His name was Agis. He lived like the Spartans of old, practiced all the virtues of his ancestors, and was frugal and brave in the extreme. To restore Sparta, real Spartans were needed, but, in counting them over, Agis found that there were only about seven hundred of the old stock left. The first move was to restore equality. For that purpose, all the money and land would have to be equally divided, so Agis began by persuading his own mother and grandmother to give up their wealth. Leonidas did not like the plan of equality, and soon openly opposed it, although his son-in-law Cleombrotus sided with Agis, and upheld it.