What reasons led to the First World War?

The main reason for the outbreak of the First World War was the confrontation between the ruling empire states in Europe, where on the one hand there was the Russian Empire, France and England, and on the other, Germany, Austria-Hungary, Bulgaria and the Ottoman Empire. It was the ambitions of these states that became the main cause of the conflict. The reason for the war was the attempt on the life of the Austrian prince Ferdinant, which took place on June 28, 1914.