Primarily by fighting the war...
We won
In World War 1 Russia and France were allies.
japan and Italy
The allies
Axis
Germany and her allies
Communism ftw
The allies were
The Allies in World War I included Russia, France, Great Britian, Italy, Japan, and the U.S.
The German Allies surrenedered because they want peace, and then the allies killed them all.
World war 1 ended because the Germans surrended to the Allies
World War 2. The Allies had it, and the Axis did not.