Answer: Japan, Germany, Russia, Turkey, Serbia, Austria-Hungery,Cananda, France, United Kindom , Austraillia, Aferica.
Explanation:
The war was fought inside every fronts of the World so that how it name is quiffiled for the name "World War" It was mostly between the Centeral Power Manily: Germany, Austria-Hunger , Turkey VS Triple Entente: France, Serbia, Russia they war was fought because Serbia killed Austria-Hungery King
Ferdinand.