Neapolis was an ancient Greek

Ancient Greek

Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...

 city located in Thrace , located in the region between the river Strymon and the river Nestos.It was founded by colonists from Thasos

Thasos

Thasos or Thassos is a Greek island in the northern Aegean Sea, close to the coast of Thrace and the plain of the river Nestos but geographically part of Macedonia. It is the northernmost Greek island, and 12th largest by area...

.Neapolis was a member of the Delian league

Delian League

The Delian League, founded in circa 477 BC, was an association of Greek city-states, members numbering between 150 to 173, under the leadership of Athens, whose purpose was to continue fighting the Persian Empire after the Greek victory in the Battle of Plataea at the end of the Greco–Persian Wars...

 and entered the Athenian tribute list at 454 BC

454 BC

Year 454 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Capitolinus and Varus...

 first by toponym and by 443 BC

443 BC

Year 443 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Macerinus and Barbatus...

 by city-ethnic name.Recorded a total of fourteen times form 454 BC to 429 BC it paid the sum of 1,000 drachmas.It had independence from Thasos

Thasos

Thasos or Thassos is a Greek island in the northern Aegean Sea, close to the coast of Thrace and the plain of the river Nestos but geographically part of Macedonia. It is the northernmost Greek island, and 12th largest by area...

 as dues of its customs were collected in its own harbour.At a point property of Neapolitans in Thasos

Thasos

Thasos or Thassos is a Greek island in the northern Aegean Sea, close to the coast of Thrace and the plain of the river Nestos but geographically part of Macedonia. It is the northernmost Greek island, and 12th largest by area...

 was confiscated by the Oligarch

Oligarchy

Oligarchy is a form of power structure in which power effectively rests with an elite class distinguished by royalty, wealth, family ties, commercial, and/or military legitimacy...

s related to a situation from before 463 BC

463 BC

Year 463 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Priscus and Helva...

 when the Thasian "peraia" was detached from Thasos. Despite Thasos defection from the Delian league in 411 BC

411 BC

Year 411 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Mugillanus and Rutilus...

Neapolis remained loyal causing Neapolitan Oligarchs to flee to Thasos and the confiscation of properties. Neapolis was besieged by the Thasians unsuccessfully causing the Athenians to praise them for their loyalty and for participating the siege of Thasos itself at 410 or 409 BC.