World history. what effect did marcus aurelius' actions have on the strength and skill of the roman army? officers in the army now achieved promotion based on their social status. officers in the army now organized into more permanent social rankings. officers in the army now achieved promotion due to their ability and merit. officers in the army now controlled larger legions and had more authority.

The correct answer is: "Officers in the army now achieved promotion due to their ability and merit."

Marcus Aurelius was Roman Emperor from 161 to 180. He is seen as the last emperor of the "Pax Romana", an age of relative peace and stability for the Roman Empire. He is widely credited as one of the "Five good emperors of Rome".

Marcus Aurelius made a series of appointments in order to replace the empire's top officials. He decided to put people he knew had the qualifications and have had ascended up the ranks in government through merit. This assured him he would have competent individuals while he was ruling.