How did Diocletian and Constantine try to reform the empire?

In the middle of the third century, the Roman Empire faced internal turmoil and external attacks. Civil wars tore the empire apart as emperors rose and fell in quick succession, and barbarian groups migrated and marauded deep within the boundaries of the empire. Wars and invasions disrupted normal commerce and agriculture, the primary sources of tax revenues. The barracks emperors of the third century dealt with economic hardship by cutting the silver content of coins until money was virtually worthless. The immediate result was crippling inflation throughout the empire, made worse by the corruption of many officials. Many Romans had become Christian, but the followers of traditional Roman religion were divided in their views of what this meant for the empire. In the early fourth century, the emperor Diocletian (r. 284–305), who was born of low-status parents and had risen through the ranks of the military to become emperor, restored order, and the later emperor Constantine (r. 306–337) continued his work. How Diocletian, Constantine, and their successors responded to the problems facing the empire influenced later developments.