On one side were Austria-Hungary, Germany, Bulgaria and the Ottoman Empire, and on the other side were Britain, France, Russia, Italy, and, in 1917 the United States.
On one side were Austria-Hungary, Germany, Bulgaria and the Ottoman Empire, and on the other side were Britain, France, Russia, Italy, and, in 1917 the United States.
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:Good.
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:Good, but note that Italy changed sides during the war.