The Getae ( ) or Gets ( ; , singular ) were a Thracian-related tribe that once inhabited the regions to either side of the Lower Danube, in what is today northern Bulgaria and southern Romania. Both the singular form Get and plural Getae may be derived from a Greek exonym: the area was the hinterland of Greek colonies on the Black Sea coast, bringing the Getae into contact with the ancient Greeks from an early date. Although it is believed that the Getae were related to their westward neighbours, the Dacians, several scholars, especially in the Romanian historiography, posit that the Getae and the Dacians were the same people. Ethnonym The ethnonym Getae was first used by Herodotus. The root was also used for the Tyragetae, Thyssagetae, Massagetae, and others. Getae and Dacians Ancient sources Strabo, one of the first ancient sources to mention Getae and Dacians, stated in his Geographica ( 7BC – 20AD) that the Dacians lived in the western parts of Dacia, "towards Germania and the sources of the Danube", while the Getae lived in the eastern parts, towards the Black Sea, both south and north of the Danube. The ancient geographer also wrote that the Dacians and Getae spoke the same language, after stating the same about Getae and Thracians. Pliny the Elder, in his Naturalis Historia (Natural History), c.77–79AD, stated something similar: "... though various races have occupied the adjacent shores; at one spot the Getae, by the Romans called Daci". Appian, who began writing his Roman History under Antoninus Pius, Roman Emperor from 138 to 161, noted: "[B]ut going beyond these rivers in places they rule some of the Celts over the Rhine and the Getae over the Danube, whom they call Dacians". Justin, the 3rd century AD Latin historian, wrote in his Epitome of Pompeius Trogus that Dacians are spoken of as descendants of the Getae: "Daci quoque suboles Getarum sunt" (The Dacians as well are a scion of the Getae). In his Roman History (c.200AD), Cassius Dio added: "I call the people Dacians, the name used by the natives themselves as well as by the Romans, though I am not ignorant that some Greek writers refer to them as Getae, whether that is the right term or not...". He also said the Dacians lived on both sides of the Lower Danube; the ones south of the river (today's northern Bulgaria), in