The correct answer is letter C
The success factor in the Roman military project is closely linked to the fact that they do not have an expensive permanent army. When necessary, the Romans and other subordinate peoples were called upon to participate in some important military onslaught. For the rapid grouping of soldiers to happen, the Roman State had the foresight to build a set of roads that connected the various and distant regions of the empire.
The mainstay of the Roman military force was concentrated in the so-called legions.
