How did the military contribute to the growth and longevity of the Roman Empire?

Military leaders formed a balance of power with the Emperor.
Military commanders were in charge of appointing Senators.
Soldiers were organized into highly efficient legions.
Soldiers helped to expand the network of Roman roads.

Question

How did the military contribute to the growth and longevity of the Roman Empire?

Military leaders formed a balance of power with the Emperor.
 Military commanders were in charge of appointing Senators.
 Soldiers were organized into highly efficient legions.
 Soldiers helped to expand the network of Roman roads.

CrazyDucky · Answer

I think its d but im not too sure

CrazyDucky · Answer

wait no

CrazyDucky · Answer

slaves did that right?

justus · Answer

Nice try, it would actually be the third option.

Soldiers were organized into highly efficient legions.