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.

Read more about Empires:  Definition, Timeline of Empires

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Famous quotes containing the word empires:

    Words convey the mental treasures of one period to the generations that follow; and laden with this, their precious freight, they sail safely across gulfs of time in which empires have suffered shipwreck and the languages of common life have sunk into oblivion.
    —Anonymous. Quoted in Richard Chevenix Trench, On the Study of Words, lecture 1 (1858)

    That is the great end of empires before God, to be Catholic and draw nations into their Catholicism. But our empire is less and less Christian as it grows.
    Gerard Manley Hopkins (1844–1889)

    The reluctant obedience of distant provinces generally costs more than it [the territory] is worth. Empires which branch out widely are often more flourishing for a little timely pruning.
    Thomas Babington Macaulay (1800–1859)