The Decapolis (Greek: ) was a group of ten Hellenistic cities on the eastern frontier of the Roman Empire in the Southern Levant in the first centuries BC and AD. They formed a group because of their language, culture, religion, location, and political status, with each functioning as an autonomous city-state dependent on Rome. They are sometimes described as a league of cities, although some scholars believe that they were never formally organized as a political unit.
The Decapolis was a center of Hellenistic and Roman culture in a region which was otherwise populated by Jews, Nabataeans and Arameans. In the time of the Emperor Trajan, the cities were incorporated into the provinces of Syria and Arabia Petraea; several cities were later placed in Syria Palaestina and Palaestina Secunda. Most of the Decapolis region is located in modern-day Jordan, except Hippos and Scythopolis (in Israel), Canatha, probably Dion, Raphana and Damascus (in Syria).
Cities
The names of the traditional ten cities of the Decapolis come from Pliny's Natural History. They are:
Damascus was further north than the others and so is sometimes thought to have been an "honorary" member. Josephus stated that Scythopolis was the largest of the ten towns. Biblical commentator Edward Plumptre suggested that this is the reason why Damascus was not included in Josephus' list. According to other sources, there may have been as many as eighteen or nineteen Greco-Roman cities counted as part of the Decapolis.
History
Hellenistic period
Except for Scythopolis, Damascus and Canatha, the Decapolis cities were by and large founded during the Hellenistic period, between the death of Alexander the Great in 323 BC and the Roman conquest of Coele-Syria, including Judea in 63 BC. Some were established under the Ptolemaic dynasty which ruled Judea until 198 BC. Others were founded later, when the Seleucid Empire ruled the region. Some of the cities included "Antiochia" or "Seleucia" in their official names (Antiochia Hippos, for example), which attest to Seleucid origins. The cities were Greek from their founding, modeling themselves on the Greek polis.
The Decapolis was a region where two cultures interacted: the culture of the Greek colonists and the indigenous Jewish and Aramean cultures. There was some conflict. The Greek inhabitants were shocked by the Jewish practice of circumcision, which was regarded as a cruel and barbaric genital mutilation. Various elements of Jewish dissent towards the dominant and assimilative nature of Hellenic civilization arose gradually in the face of assimilation. At the same time, cultural blending and borrowing also occurred in the Decapolis region. The cities acted as centers for the diffusion of Hellenistic culture. Some local deities began to be called by the name Zeus, from the chief Greek god. Meanwhile, in some cities Greeks began worshipping these local "Zeus" deities alongside their own Zeus Olympios. There is evidence that the colonists adopted the worship of other Semitic gods, including Phoenician deities and the chief Nabatean god, Dushara (worshipped under his Hellenized name, Dusares). The worship of these Semitic gods is attested to in coins and inscriptions from the cities.
The Roman general Pompey conquered the eastern Mediterranean in 63 BC. The people of the Hellenized cities welcomed Pompey as a liberator from the Jewish Hasmonean Kingdom that had ruled much of the area. When Pompey reorganized the region, he awarded a group of these cities with autonomy under Roman protection; This was the origin of the Decapolis. For centuries the cities based their calendar era on this conquest: 63 BC was the epochal year of the Pompeian era, used to count the years throughout the Roman and Byzantine periods.
Autonomy under Rome
Under Roman rule, the cities of the Decapolis were not included in the territory of the Herodian kingdom, its successor states of the Herodian tetrarchy, or the Roman province of Judea. Instead, the cities were allowed considerable political autonomy under Roman protection. Each city functioned as a polis or city-state, with jurisdiction over an area of the surrounding countryside. Each minted its own coins. Many coins from Decapolis cities identify their city as "autonomous," "free," "sovereign," or "sacred," terms that imply some sort of self-governing status.