World War One started in August of 1914 and ended in 1918. The war started with a disagreement between two forces. On the Allied side there was Britain, France, Russia, the United States (who didn't join the war until 1917) and Italy. On the Central side there was Germany, Austria-Hungary, the Ottoman Empire and Bulgaria. The actual event that started the war was the assassination of Archduke Franz Ferdinand by a Serbian nationalist, Gavrilo Princep. Archduke Franz Ferdinand was the heir to the Austria-Hungary throne and the assassination was basically the last straw to break the tension between Austrian-Hungary and Serbia. Germany backed Austria-Hungary but Russia backed Serbia, which started a new conflict. Germany and France had been fighting over the territory of Alsace Lorraine, which France had lost in the Franco-Prussian War. Germany wanted to show it's growing power so it decided to attack France.

World War One had an...