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Empire
An empire is a political construct in which one state dominates over another state, or a series of states. At its heart, an empire is ruled by an emperor, even though many states in history without an emperor at their head are called "empires"...
Definition
Western Roman Empire
The Western Roman Empire is the modern-day term for the western half of the Roman Empire after it was divided in two by the emperor Diocletian (r. 284-305 CE) in c. 285/286 CE. The Romans themselves did not use this term. At its height (c...
Definition
Ancient Persia
Persia (roughly modern-day Iran) is among the oldest inhabited regions in the world. Archaeological sites in the country have established human habitation dating back 100,000 years to the Paleolithic Age with semi-permanent settlements (most...
Definition
Ancient Persian Government
The government of ancient Persia was based on an efficient bureaucracy which combined the centralization of power with the decentralization of administration. The Achaemenid Empire (c. 550-330 BCE) founded by Cyrus the Great (r. c. 550-530...
Definition
Ancient Persian Governors
The Achaemenid Persian Empire functioned as well as it did because of the efficient bureaucracy established by its founder Cyrus the Great (r. c. 550-530 BCE) which was administered through the satrapy system. A Persian governor of a province...
Definition
Empire of Nicaea
The Empire of Nicaea was a successor state to the Byzantine Empire, or rather a Byzantine Empire in exile lasting from 1204 to 1261 CE. The Empire of Nicaea was founded in the aftermath of the sacking of Constantinople during the Fourth Crusade...
Definition
Empire of Trebizond
The Empire of Trebizond was an offshoot of the Byzantine Empire that existed from 1204 to 1461 CE, ruled by the Megas Komnenos Dynasty, descendants of the Komenos Byzantine emperors. The Empire of Trebizond has been far less researched than...
Definition
Roman Empire
The Roman Empire, at its height (c. 117), was the most extensive political and social structure in western civilization. Building upon the foundation laid by the Roman Republic, the empire became the largest and most powerful political and...
Definition
Parthia (Empire)
The Parthians ruled from 247 BCE to 224 CE creating a vast empire that stretched from the Mediterranean in the west to India and China in the east. East of the Caspian Sea there emerged from the steppe of Central Asia a nomadic Scythian tribe...
Definition
Ardashir I
Ardashir I (l. c. 180-241 CE, r. 224-240 CE) was the founder of the Persian Sassanian Empire (224-651 CE) and father of the great Sassanian king Shapur I (r. 240-270 CE). He is also known as Ardashir I Babakan, Ardeshir I, Ardashir the Unifier...