Dacian kingdom. Early references Only three ancient sources on Burebista survive: Strabo: Geographica 7.3.5, 7.3.11 and 16.2.39 (who spells his name Byrebistas and Boirebistas); Jordanes: Getica67 (spells his name Buruista); and a marble inscription found in Balchik, Bulgaria (now housed at the National Museum in Sofia), which represents a decree by the citizens of Dionysopolis about Akornion. Dacian kingdom The area roughly located between the Danube, Tisza and Dniester riversapproximately coinciding with modern-day Romaniabecame home to a varied group of Thracian peoples, including the Getae and Dacians, sometime around the 7th to 6thcenturies BC. The Getae and Dacians are related but distinct peoples that are sometimes treated as a single group under the name of Geto-Dacians. The Getae and the Dacians shared many cultural and linguistic similarities. Living in the lower Danube basin, the Getae were able to establish regular trade with the Greek cities along the coast of the Black Sea. The Dacians were located in the Carpatho-Danubian basin along the southern border of the Carpathian Mountains. This relative geographic isolation allowed the Dacians to survive catastrophic strugglesoften with the Getaeand thrive to become the dominant tribe by the 1stcentury BC. Before Burebista's rule, the Dacians had experienced a succession of kings through the period 450 to 60BC. The kings included Dromichaetes, Oroles, and Rubobostes in the 3rd and 2ndcenturies BC. From the 4thcentury BC to the 2ndcentury BC the LaTène Celts of the Danube, Alpines, and Balkans influenced the Dacian culture. LaTène material culture was found in the central and north-west regions of Dacia. The development of a LaTène-based economy in the 3rd and 2ndcenturies BC allowed the consolidation of political power through tribal unions. Such regional unions were found among both the Transylvanian Dacians under the rule of Rubobostes and the Moldavian and Muntenian Getae in Argedava. It is from the LaTène that the Dacians were introduced to the potter's wheel, superior metal-working techniques, and probably a tradition of minting coins. In homes were found a combination of Celtic and Dacian pottery, and certain Celtic-style graves contain Dacian style vessels. This suggests a sort of co-existence and fusion between the cultures. Sometime after around 150BC, however, evidence of LaTène culture peters out, around the same time the Dacian culture began to mature, as evidenced by population and economic growth. Under Rubobstes the authority of the Dacians appears to have increased, thus ending the dominance of the Celtic