What major reform did Diocletian introduce to stabilize the empire during the Crisis of the Third Century?

• A. The tetrarchy, dividing rule among four rulers
• B. A return to the monarchy of one emperor with absolute power
• C. Abolition of provincial governance
• D. Complete decentralization of Roman law

Answer: (C)

The main idea tested is how Diocletian reshaped imperial rule to stabilize a fractured empire: he introduced the tetrarchy, a system of rule by four. In the crisis years, Rome faced constant revolts and rapid shifts of power, so Diocletian divided authority between two senior emperors (one for the East, one for the West) and two junior colleagues who could succeed them. This created a clearer succession path, improved military coordination across vast frontiers, and brought more consistent administration.

Alongside this, he reorganized provincial structure—making provinces smaller and grouping them into dioceses under officials who coordinated between civil and military needs—so governance could be more efficient and controllable within the new framework. This is not abolition of provincial governance; it’s a reorganization aimed at tighter, more reliable central control.

So the major reform that stabilized the empire was the tetrarchy, not doing away with provincial governance. The other ideas don’t fit the actual approach Diocletian took to restore order and continuity.