Empire Trajectory Dataset - The Epoch Institute

The Epoch Institute's Empire Trajectory Dataset covers 94 civilisations across five millennia, from ancient Mesopotamia to the modern era. Each entry includes normalised power scores (0–10) across six dimensions: • Territory • Military capacity • Economic output • Administrative coherence • Cultural influence • Geopolitical reach Power scores are researcher-assessed indices drawn from peer-reviewed historiography with Harvard-style citations. Scores represent relative civilisational power plotted across each empire's full lifespan — from founding through peak to decline. The dataset accompanies the Interactive Empire Explorer at https://the-epoch-institute.org, where all 94 trajectories can be visualised, filtered by region and era, and explored alongside full scholarly profiles for each civilisation. Intended for academic, educational, and research use under Creative Commons Attribution 4.0 International (CC BY 4.0). You are free to share and adapt this data for any purpose provided appropriate credit is given to The Epoch Institute.