Which major power was the last to join the Allies, entering the war in 1917?
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Correct answer: The United States
The United States joined the Allies after years of neutrality, triggered by unrestricted submarine warfare and the Zimmerman Telegram. Its entry provided the industrial and manpower surge necessary to break the stalemate on the Western Front.
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More Major Alliances questions
- What was the main weakness of the alliance systems prior to World War I?
- Which three nations comprised the Triple Alliance at its formation in 1882?
- The Triple Entente, a diplomatic counterweight to the Triple Alliance, was completed in 1907 by the agreement between which two nations?
- Which term best describes the 1904 'Entente Cordiale' between Britain and France?
- Why did Italy refuse to join its Triple Alliance partners, Germany and Austria-Hungary, when the war broke out in 1914?
- Which 1879 alliance served as the foundation for the Central Powers, linking Germany and Austria-Hungary?