The Central Powers lost the First World War.
The First World War (1914-1918) pitted two major alliances against each other:
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The Entente Powers (Allies): France, Russia (until 1917), the British Empire, Italy (from 1915), and the United States (from 1917).
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The Central Powers: Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria.
The Entente Powers ultimately defeated the Central Powers, leading to significant territorial losses, economic hardship, and political upheaval for the losing nations. The defeat had a profound impact on the subsequent course of the 20th century.