status of "king client to Rome", receiving military instructors, craftsmen and money from Rome. To Rome, Domitian brought Italian peasants in Dacian clothing because he couldn't take slaves in the war. To increase the glory of his reign, restore the finances of Rome, and end a treaty perceived as humiliating, Trajan resolved on the conquest of Dacia, the capture of the famous Treasure of Decebalus, and control over the Dacian gold mines of Transylvania. The result of his first campaign (101–102) was the siege of the Dacian capital Sarmizegethusa and the occupation of part of the country. Emperor Trajan recommenced hostilities against Dacia and, following an uncertain number of battles, and with Trajan's troops pressing towards the Dacian capital Sarmizegethusa, Decebalus once more sought terms. Decebalus rebuilt his power over the following years and attacked Roman garrisons again in AD 105. In response Trajan again marched into Dacia, attacking the Dacian capital in the Siege of Sarmizegethusa, and razing it to the ground; the defeated Dacian king Decebalus committed suicide to avoid capture. With part of Dacia quelled as the Roman province Dacia Traiana. Trajan subsequently invaded the Parthian empire to the east. His conquests brought the Roman Empire to its greatest extent. Rome's borders in the east were governed indirectly in this period, through a system of client states, which led to less direct campaigning than in the west. Some of the history of the war is given by Cassius Dio. Trajan erected the Column of Trajan in Rome to commemorate his victory. Provincial history Although the Romans conquered and destroyed the ancient Kingdom of Dacia, a large remainder of the land remained outside of Roman Imperial authority. Additionally, the conquest changed the balance of power in the region and was the catalyst for a renewed alliance of Germanic and Celtic tribes and kingdoms against the Roman Empire. However, the material advantages of the Roman Imperial system was attractive to the surviving aristocracy. Afterwards, many of the Dacians became Romanised (see also Origin of Romanians). In AD 183, war broke out in Dacia: few details are available, but it appears two future contenders for the throne of emperor Commodus, Clodius Albinus and Pescennius Niger, both distinguished themselves in the campaign. According to Lactantius, the Roman emperor Decius (AD 249–251) had to restore Roman Dacia from the Carpo-Dacians of Zosimus "having undertaken an expedition against the Carpi, who had then