Diocletian vs Suppiluliuma I

Diocletian created the Tetrarchy, dividing the Roman Empire into four administrative regions ruled by two senior emperors (Augusti) and two junior emperors (Caesares). This system aimed to improve governance and defense, and stabilize imperial succession.

Diocletian reorganized the Roman provinces into smaller units (dioceses) grouped into four prefectures, separating civilian and military authority. This reform improved tax collection and administration, but also increased bureaucracy.

Diocletian issued the Edict on Maximum Prices, setting price ceilings on over 1,000 goods and services to combat inflation. The edict was largely ineffective and led to black markets, but demonstrated the state's attempt to control the economy.

Diocletian issued a series of edicts ordering the persecution of Christians throughout the Roman Empire. Churches were destroyed, scriptures burned, and Christians were executed or forced to sacrifice to Roman gods. This was the last and most severe state-sponsored persecution.

Diocletian voluntarily abdicated the throne, retiring to his palace in Split (modern Croatia). He forced his co-emperor Maximian to do the same, setting a precedent for orderly succession, though the Tetrarchy soon collapsed after his departure.

Suppiluliuma I launched a military campaign that defeated the Mitanni Empire, a major rival in northern Mesopotamia. He installed a vassal king and annexed large territories, making the Hittite Empire the dominant power in the region.

Suppiluliuma I restructured the Hittite administration, appointing his sons as viceroys in conquered territories such as Aleppo and Carchemish. This system of vassal kings strengthened central control and facilitated imperial governance.

Suppiluliuma I besieged and captured the strategically important city of Carchemish on the Euphrates. The victory secured Hittite control over trade routes and established a vassal dynasty there.

Suppiluliuma I received a letter from an Egyptian queen (likely Ankhesenamun, widow of Tutankhamun) requesting a Hittite prince as her husband. He sent a son, Zannanza, who was murdered en route, leading to hostilities with Egypt.