The Dacians are the subject of Trajan& #39;s Column - Dacia was a kingdom equating to Romania & Moldova, & also parts of Serbia, Bulgaria, Hungary, Poland & Slovakia. This image shows two Dacian warriors on the Arch of Constantine.
The Dacian kingdom under their last king, Decebalus, covered around 400,000 square kilometres. This powerful kingdom was seen as a threat to Rome & Decabalus had mounted successful raids south of the Danube. The images show Dacians on Trajan& #39;s Column.
The Roman Emperor, Domitian, tried to deal with the Dacian threat with disastrous campaigns in AD86 & 88. Domitian had to settle diplomatically with Dacia. The Emperor Trajan decided to try & conquer Dacia launching two wars (The Dacian Wars) in AD101-102 & AD105-6.
At the end of the 1st War, Decabalus sued for peace on terms favourable to the Romans, but this was seen as temporary & in AD105, Trajan besieged the Dacian Capital, Sarmizegetusa. The siege eventually succeeded & Decabalus fled, committing suicide as shown on Trajan& #39;s Column
Around half the kingdom of Dacia was assimilated into the Roman Empire, with the reminder remaining outside the Empire. Trajan& #39;s column was constructed to celebrate the triumph of the Empire over the Dacians.