Hellenistic / Roman Period
The Macedonians enforced an oligarchic government. During the 2nd Macedonian war in 200/166 B.C. Skiathos and Skopelos were destroyed so as not to fall into the hands of the enemies.
After the defeat of Philipp at Kynos Kefales in 197 B.C. a democratic government is brought back into power. In 197 B.C. the island is finally subjugated by the Romans. In 192 B.C. a new invasion is made on the island by Antiochos the 3rd of Syria, who foraged the entire wheat production.
The life of the Skiathans during this period was especially turbulent with intense political variations.
In 88 B.C. the King of Pontus Mithridatis the 6th appears as a liberator from the Romans. He makes the island a base of operations for his attacks, after having burnt it and devastated it. After the defeat of Mithridatis, stability did not return.
In 42 B.C. and after the battle of Philippoi, the victorious Mark Anthony offered Skiathos to the Athenians and once again it had a democratic government. It remained under Athenian domination up to 193-221 A.D. when it passed to the Romans again. The town began to extend outside the walls according to the traces of the Aqueduct, Roman mosaics, reliefs and signed inscriptions dedicated to Hadrian and Septem Severus.
Christianity appears on Skiathos in 325 B.C. and in 530 B.C the first churches was built on the island.