DiocletianMaximian
DiocletianMaximian refers to the co-emperor rule of Diocletian and Maximian in the Roman Empire. Diocletian, born Diocles, was a Roman emperor from 284 to 305 AD. He recognized the vastness and complexity of the empire's administration and the need for a more effective governance system. To address this, he appointed Maximian, originally Marcus Aurelius Valerius Maximianus, as his co-emperor in 286 AD. This marked the beginning of the Tetrarchy, a system where the empire was divided into Eastern and Western halves, each ruled by an Augustus (senior emperor) and a Caesar (junior emperor). Diocletian ruled the East, with his capital in Nicomedia, while Maximian governed the West, with his primary residence in Milan. This arrangement aimed to improve military defense, administrative efficiency, and succession planning. The two emperors worked in tandem, often campaigning separately to secure the empire's borders. Their reign was characterized by significant reforms, including economic and administrative changes, and the last major persecution of Christians. The Tetrarchy, though innovative, eventually dissolved after Diocletian's abdication in 305 AD, leading to further instability and civil wars.