The acquisition of resources, land, influence, population, etc. through aggressive diplomacy/military force in order to gain an edge on rival factions or in an attempt to achieve everlasting total supremacy over all other factions. Imperialism saw a sharp rise in the early 20th century, in which various predominant European and Asian monarchies in dire need of raw resources to upkeep their growing industrial and economic needs frequently engaged in minor skirmishes with their weaker neighbors and distant, underdeveloped lands. This in turn contributed to the outbreak of World War 1, in which tensions for new territories rich in resources pitted imperial alliances against each other after the assassination of Arch Duke Franz Ferdinand.
Most well known imperialist states and their justifications for imperialism:

-Roman Empire(The greatest empire to ever exist. Many monarchies have tried to emulate its success at transcontinental unification and longevity.)

-Holy Roman Empire(Arguably the successor to the Roman Empire.)

-British Empire(Once a dominant hyper power, owning a third of the world’s landmass.)

-German Empire(A culturally rich European state who was a key player in the central powers’ military campaigns throughout World War 1.)

-Ottoman Empire(A culturally rich and ancient Middle Eastern state founded in 1299 C.E. that served as a bastion of civilization to the now shattered muslim world for more than 600 years. It’s downfall was brought about by the defeat of the central powers at the end of World War 1, which it was a part of.)

-Egyptian Empire(A truly ancient and extremely well known imperialist state which inhabited North Africa. It enslaved many of its neighbors and launched frequent military expeditions and raids in order to acquire more resources for the glory of their Pharaohs, which were considered gods, and the well being of the nation.)

-Akkadian Empire(A monumental leap in organized government and state planning in the history of our species, the Akkadian Empire was the first hyper power in the entire world. It developed in the year 2234 B.C. in the Fertile Crescent, an area in Mesopotamia credited with being the cradle of human civilization.)
by ChadAuthRight December 31, 2020
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Often used to describe the United States' form of measurement, in other countries.
You americans and your imperial Inch!
by Wes Engstrom July 17, 2006
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When a more forward nation takes over a more backward nation for land, raw materials and capital.
Imperialism... thanks for taking it all in stride Native Americans.
by StudentOfFreed December 10, 2009
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An act of enterprising. In other words, going from place to place, shoving your evil capitalist beliefs down everyones throats, then raiding the countries natural resources and leaving the country with 'freedom' Often used in the sentences with other words, like George Bush, Capitalism, OMFG Bush is a bastard and, WTF is americas problem?! Oil is the number 1 cause of imperialism.
OMFG, George Bush is such a fucked up imperialist/capitalist bastard, WTF is americas problem? SIMPLE! GEORGE BUSH!
by Karl Marx October 14, 2004
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Arrogantly, domineering, or overbearing

If someone asks you to do something imperiosly there will be consequences for not doing it.
Man with gun: "give me the money!" the man said imperiously

Random person: "Ok, Ok don't shoot!"
by Xiophillio April 13, 2009
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Tactic employed by nation-states, typically those whose population is generally white (Caucasian), in order to gain controlling influence upon a target non-white nation;
Through requiring conquered peoples to speak English, the Pax Brittancia practiced imperialism.
by Guised February 22, 2005
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