World War I

World War I, 1914–18, also known as the Great War, conflict, chiefly in Europe, among most of the great Western powers. It was the largest war the world had yet seen.

Sections in this article:

• Introduction
• Causes
• War's Outbreak
• From the Marne to Verdun
• From America's Entry to Allied Victory
• Aftermath and Reckoning
• Bibliography

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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