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imperialism
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Map showing the Persian Empire at its greatest territorial extent, spanning from the eastern Mediterranean and Egypt in the west to the Indus Valley in the east, including regions around the Black Sea, Caspian Sea, and Persian Gulf. The area of the empire is shaded in light green, with the boundaries of modern Iran outlined within it. Major ancient cities and regions are labeled throughout the empire. Detail from Charles Le Brun's painting showing Alexander the Great in profile, wearing a gold helmet with white plumes and a blue cloak, with soldiers in the background. Map showing the maximum territorial extent of the Roman Empire in AD 117, shaded in yellow, spanning from western Europe and North Africa to the Near East. Major rivers and seas are labeled, and various symbols mark the locations of Roman colonies and municipia established during the Pre-Caesarian, Caesarian, and Augustan periods. The boundary at the death of Emperor Trajan is highlighted.
A collage featuring four colonial-era European figures in military and formal attire, a yellow map of Africa, and a vintage cartoon of imperialism in the background.
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imperialism: References & Edit History

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Modified link of Web site: Humanities LibreTexts - Motives and Means of Imperialism. Sep 26, 2026
Media added. Feb 27, 2025
Add new Web site: Scholars at HARVARD - The World at the beginning of the Twentieth Century Crisis within Imperialism (PDF). Feb 14, 2025
Questions and answers added. Feb 11, 2025
Add new Web site: CORE - GeoPolitics of contemporary Imperialism (PDF). Dec 16, 2024
Add new Web site: CORE - GeoPolitics of contemporary Imperialism (PDF). Dec 16, 2024
Add new Web site: Digital History - Three Theories Explaining Imperialism (PDF). Sep 14, 2024
Add new Web site: Cornell Law School - Legal Information Institute - Imperialism. Jun 18, 2024
Add new Web site: Pressbooks@Michael Schwartz Library - Keys to Understanding the Middle East - The Impact of Imperialism on the Region. May 07, 2024
Add new Web site: Khan Academy - Tools of Imperialism. Mar 28, 2024
Add new Web site: JayScholar @ ETown - Modern Irredentism or Cloaked Imperialism? Hidden Agendas and Hybrid Warfare in Reinstating the Russkiy Mir. Mar 22, 2024
Add new Web site: Atlantic Canada Pressbooks Network - Western Civilization - Imperialism. Feb 12, 2024
Add new Web site: Minnesota Libraries Publishing Project - Modern World History - Imperialism. Jan 01, 2024
Add new Web site: The Balance Money - What is Imperialism? Jul 04, 2023
Add new Web site: Academia - Imperialism. Mar 26, 2023
Add new Web site: Humanities LibreTexts - Motives and Means of Imperialism. Dec 01, 2022
Add new Web site: 1914-1918 online - International Encyclopedia of the First World War - Imperialism. Aug 18, 2022
Media added. Jan 06, 2020
Article revised and updated. Oct 24, 2019
Corrected display issue. Jul 25, 2018
Add new Web site: Alpha History - Imperialism as a cause of World War I. Mar 29, 2018
Add new Web site: Buzzle.com - Imperialism. Dec 06, 2012
Add new Web site: The Canadian Encyclopedia - Imperialism. Dec 06, 2012
Add new Web site: Fact Monster - History - Imperialism. Dec 06, 2012
Deleted map. Mar 02, 2012
Added new Web site: Visualstatistics - Empire of the Czars.
  • Gaurav Shukla
 May 31, 2007
Media added. May 15, 2007
Article added to new online database. Jul 20, 1998
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