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Holy Roman Empire
The Holy Roman Empire officially lasted from 962 to 1806. It was one of Europe’s largest medieval and early modern states, but its power base was unstable and continually shifting. The Holy Roman Empire was not a unitary state, but a confederation...

Definition
Portuguese Empire
The Portuguese Empire was established from the 15th century and eventually stretched from the Americas to Japan. Very often a string of coastal trading centres with defensive fortifications, there were larger territorial colonies like Brazil...

Definition
Achaemenid Empire
East of the Zagros Mountains, a high plateau stretches off towards India. While Egypt was rising up against the Hyksos, a wave of pastoral tribes from north of the Caspian Sea was drifting down into this area and across into India. By the...

Definition
Akkad and the Akkadian Empire
Akkad was the seat of the Akkadian Empire (2334-2218 BCE), the first multi-national political entity in the world, founded by Sargon the Great (r. 2334-2279 BCE) who unified Mesopotamia under his rule and set the model for later Mesopotamian...

Definition
Wolof Empire
The Wolof (aka Jolof or Djolof) Empire was a state on the coast of West Africa, located between the Senegal and Gambia rivers, which thrived from the mid-14th to mid-16th century CE. The empire prospered on trade thanks to the two rivers...

Definition
Khmer Empire
The Khmer empire was a powerful state in South East Asia, formed by people of the same name, lasting from 802 CE to 1431 CE. At its peak, the empire covered much of what today is Cambodia, Thailand, Laos, and southern Vietnam. By the 7th...

Definition
Mauryan Empire
The Mauryan Empire (322 BCE - 185 BCE) supplanted the earlier Magadha Kingdom to assume power over large tracts of eastern and northern India. At its height, the empire stretched over parts of modern Iran and almost the entire Indian subcontinent...

Definition
Seleucid Empire
The Seleucid Empire (312-63 BCE) was the vast political entity established by Seleucus I Nicator ("Victor" or "Unconquered", l. c. 358-281 BCE, r. 305-281 BCE), one of the generals of Alexander the Great who claimed a part of his empire after...

Definition
Egyptian Empire
The Egyptian Empire rose during the period of the New Kingdom (c. 1570- c. 1069 BCE), when the country reached its height of wealth, international prestige, and military might. The empire stretched from modern-day Syria in the north to modern-day...

Definition
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"...