IMPERIALISM

imperialism

(noun) any instance of aggressive extension of authority

imperialism

(noun) a political orientation that advocates imperial interests

imperialism

(noun) a policy of extending your rule over foreign countries

Source: WordNet® 3.1

Etymology

Noun

imperialism (countable and uncountable, plural imperialisms)

The policy of forcefully extending a nation's authority by territorial gain or by the establishment of economic and political dominance over other nations.

Source: Wiktionary

Im*pe"ri*al*ism, n.

Definition: The power or character of an emperor; imperial authority; the spirit of empire. Roman imperialism had divided the world. C. H. Pearson.

Source: Webster’s Unabridged Dictionary 1913 Edition