Why Did Austria-Hungary Lost World War One?

World war 1 was finally over. After the war was over the German felt upset about the war because they lost so many men. The German felt the only lost the war because they were “stabbed in the back” which mean that Italy broke an alliance with us during the war. To the people of Germany, World war 1 was terrible for us. We believe that Austria-Hungary start the war. Because an assassin name Gavrilo Princip kill Franz Ferdinand, the archduke of Austria-Hungary. His deaths cause the war on the hands of Gavrilo Princip. During the war, many men die during battle. Many men die from gunshot wounded, disease, and Poison gas. Every time I enter to battle I see many dead body in the ground. About 1.7 million men were killed during world war