The region which ran along the coast of the Adriatic Sea and extended inland on the Dinaric Alps was called Illyria by the Greeks. Originally the Romans also called it Illyria. Later they called it Illyricum. The Romans fought three Illyrian Wars (229 BC, 219/8 BC and 168 BC) mainly against the kingdom of the Ardiaei in the south of the region. In 168 BC they abolished this kingdom, divided it into three republics. The area became a Roman protectorate. The central and northern area of the region engaged in piracy and raided north-eastern Italy. In response to this, Octavian (who later became the emperor Augustus) conducted a series of campaigns in Illyricum (35-33 BC). The area became the Roman senatorial province of Illyricum probably in 27 BC. Due to troubles in the northern part of the region in 16-10 BC, it became an imperial province. The administrative organisation of Illyricum was carried out late in the reign of Augustus (27 BC-14 AD) and early in the reign of Tiberius (14- 37 AD).