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The term empire derives from the Latin imperium (power, authority). Politically, an empire is a geographically extensive group of states and peoples (ethnic groups) united and ruled either by a monarch (emperor, empress) or an oligarchy. Aside from the traditional usage, the term empire can be used in an extended sense to denote a large-scale business enterprise (e.g. a transnational corporation), or a political organisation of either national-, regional- or city scale, controlled either by a person (a political boss) or a group authority (political bosses).
An imperial political structure is established and maintained in two ways: (i) as a territorial empire of direct conquest and control with force (direct, physical action to compel the emperor’s goals), and (ii) as a coercive, hegemonic empire of indirect conquest and control with power (the perception that the emperor can physically enforce his desired goals). The former provides greater tribute and direct political control, yet limits further expansion because it absorbs military forces to fixed garrisons. The latter provides less tribute and indirect control, but avails military forces for further expansion. Territorial empires (e.g. the Mongol Empire, the Median Empire) tended to be contiguous areas. The term on occasion has been applied to maritime empires or thalassocracies, (e.g. the Athenian and British Empires) with looser structures and more scattered territories.
Definition of Empire
An empire is a state with politico-military dominion of populations who are culturally and ethnically distinct from the imperial (ruling) ethnic group and its culture — unlike a federation, an extensive state voluntarily composed of autonomous states and peoples.
What physically and politically constitutes an empire is variously defined. It might be a state effecting imperial policies, or a particular political structure. Empires are typically formed from separate components that come together. Some units include ethnic, national, cultural, and religious diversity. Sometimes an empire is a semantic construction, such as when a ruler assumes the title of “Emperor”. The said ruler's nation logically becomes an “Empire”, despite having no additional territory or hegemony such as Central African Empire or the Korean Empire proclaimed in 1897 when Korea, far from gaining new territory, was on the verge of being annexed by the Empire of Japan, the last to use the name officially. Amongst the last of these empires of the 20th century were the Central African Empire, Ethiopia, Vietnam, Manchukuo, the German Empire, and Korea.
The terrestrial empire’s maritime analogue is the thalassocracy, an empire comprising islands and coasts which are accessible to its terrestrial homeland, such as the Athenian-dominated Delian League.
- Empire - http://en.wikipedia.org/wiki/Empire