Centers of power

Centers of power are localized regions of the world where political, economic and cultural influence are dominant for a time, hence defining a particular age within history. During early civilization, this was limited to civilization itself, while in the current age the terms first world, second world and third world are typically used to describe the differences between power by nationality, and region.

* Fertile Crescent
**Mesopotamia
**Ancient Egypt
* Ancient India
**Indus Valley Civilization
**Maurya Empire
**Pala Empire
**Chola Empire
**Mughal Empire
* Ancient China
**Qin Dynasty
**Han Dynasty
**Tang Dynasty
**Ming Dynasty
**Qing Dynasty
* Ancient Iran and Persian Empire
**Achaemenid Empire
**Parthian Empire
**Sassanid Empire
* Ancient Mediterranean
**Ancient Egypt
**Ancient Greece and Macedonian Empire
**Carthage
**Ancient Rome and Roman Republic
**Roman Empire and Byzantine Empire
* Arab Empire
**Rashidun Caliphate
**Umayyad Caliphate and Caliphate of Córdoba
**Abbasid Caliphate
* Mongol Empire
* Europe
* British Empire
* American empire, United States of America