First of all we have to consider the major economical importance of the province of Dacia. Anyone who looks at a map of the Roman Empire, at its greatest extend, will notice that Dacia had an unusual shape, being much more difficult to defend then the former boundary on the Danube river. So the province didn’t have a strategic role, but mainly an economic one.
For the exploitation of the resources of Dacia (mines of gold and silver, fertile plains, woods, salt) the colonization, even from the time of Trajan, had the character of a state policy and it was very intense. Certainly the province had to be defended too, thus the military presence was also strong.
In this manner it is explainable how the autochthons were Romanized during this short period of 165 years. And the best proof of this fact is represented by the number of Latin inscriptions that have been discovered in Dacia, 3000, that is quite big compared to other provinces that have been possessed by the Romans for a much longer time: Dalmatia - 9500, Moesia Superior - 1300, Moesia Inferior - 1300, Pannonia Superior - 3500, Pannonia Inferior - 1500.
Our attention is especially drawn to the two Moesias because, although they had together a larger territory than Dacia and were part of the Roman Empire for many centuries, they revealed less inscriptions than Dacia. It is known that in these two provinces, the Roman civilization penetrated mainly along the Danube, where we find most of the cities and the military camps. Surely they had a lesser economical importance.

Another facts in further posts.

Julianus Domitius