Tetrarchy, Political System with two emperors and two caesars (Roman Empire) : All Data

1. Lists and Timelines of Events that took place during the tenure of the Ruler

2. Maps Comparing Territorial Boundaries Before and After the Ruler´s Reign

3. Maps of Maximum Historical Extents

4. Monthly Summaries of Events

5. Time Series of Historical Population and Area

6. Time Series of Territorial Changes