Trajan’s major conquests: Ancients Today

Roman coins commemorate ruler’s exploits for empire
By , Special to Coin World
Published : 08/26/15
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Late in the reign of the emperor Trajan (A.D. 98 to 117) the territory of the Roman world reached its zenith. 

For a brief period Rome had flexed its muscles to such an extent that the world took notice: Romans ruled from the shores of the Atlantic to the Indian Ocean and it might have seemed there was no limit to how the empire would grow.

However, this singular achievement was unsustainable. Trajan’s successor, Hadrian (A.D. 117 to 138), had no choice but to draw back the borders to a more manageable size. Most of the recent gains — except Dacia and Arabia — had to be abandoned.

Trajan’s two major conquests took place in Dacia and the Parthian Kingdom, both of which were beyond Rome’s established borders. In each case the territories were occupied by people with a history of hostility toward Rome and its interests, and Trajan intended to minimize their potential for causing harm.

It is impossible to know the details of Trajan’s grand scheme. Did he believe Rome could rule these far-flung regions over the long term, or did he merely hope to inflict some stinging defeats while gaining personal glory and filling Rome’s coffers?

In the case of Dacia, a region north of the Danube River that constitutes modern Romania, Moldova and some surrounding areas, we might suspect he had a long-term view in mind. In two campaigns against the warlike Dacian King Decebalus, he did much to preserve the security of Rome’s Balkan provinces by taking his war north of the Danube and striking deep into Dacian territory.

His first campaign occurred from 101 to 102. Trajan found much success and forced Decebalus to sue for peace, which was granted. However, within a few years the Dacian king again caused trouble for the Romans, and in A.D. 106 Trajan mounted a new campaign known as the Second Dacian War.

This time Trajan finished the war in the strongest of terms. He routed the Dacians so severely that within months Decebalus had to flee. He committed suicide rather than be taken alive to Rome as a trophy for Trajan’s well-earned triumph.

After his victory Trajan converted Dacia into a Roman province. It was a good course of action as it pushed the border of Rome’s Balkan territories well beyond the Danube. Also, Trajan acquired control of many resources in Dacia, including productive mines that the Romans exploited for more than 150 years.

Financial gain also came in the form of people, for the Romans may have sold as many as half a million Dacians into the slave markets. In their place the Romans encouraged people from outside Dacia to settle the region, which required the construction of cities, fortifications and roads.

Trajan issued many coins marking his victories in Dacia. The most common types show the emperor on horseback spearing a fallen Dacian warrior, or the personification of Dacia mourning while seated on a shield, amid arms and armor, or at the base of a trophy. Other types show the decapitated head of Decebalus under the foot of Trajan, the goddess Roma or Pax, the personification of peace.

One important type shows the personification of Dacia with two children — one holding grapes, the other heads of grain — upon a rocky outcrop. In this case the inscription DACIA AVGVST PROVINCIA makes reference to the newly created province.

The Parthian Kingdom

Trajan’s second major campaign would not occur until seven years later. 

It was prompted by a diplomatic affront by the Parthians, Rome’s traditional enemy in the East, who had installed their own candidate on the throne of the buffer-state of Armenia. It was an affront that Trajan could not afford to ignore, and he left Rome in October 113 to deal with the situation.

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