The trigger of the war, was the assasination of Archduke Franz Ferdinand of Austria, the heir to the throne of Austria-Hungary. Though it was not the only cause, it was what crossed the line.
On June 28th, 1914 a young Serbian boy named Gavrilo Princip assassinated Archduke Franz Ferdinand. The heir to the Austrian throne and his wife were shot and killed as they were riding through the streets in Sarajevo (The capital of Bosnia), in southern Europe.
Another main cause was military threat. In the 19th century, the major European powers had struggled to maintain a balance of power throughout Europe. The result was, by 1900 the major powers were in a complex spider web of military alliances throughout the continent.
When Austria declared war Serbia, Russian and Germany had to side and declared war. Countries continued to side. Next was France and Germany at war. Followed by Japan and Germany at war because of Japan's alliance with Great Britain. Turkey (Ottoman Empire) joined the Germans and aided
them in a bombardment on Russia. This caused Britain and France to join Russia against Turkey.
So far the teams |