Cause lead world war. In spite of the fact that it happened almost a century ago, the First World War continues to intrigue people as a consequence of the forces involved in it, as a result of the catastrophic number of casualties, and generally because it demonstrates the fact that people are (or at least, they were) unhesitant about committing great crimes in order to impose their absurd thinking on others. It is difficult to determine whether the motives behind the war can be considered reasonable, especially given the fact that Europe had been in a state of turmoil years before the Austro-Hungarian heir, Archduke Franz Ferdinand of Austria, was assassinated.

One cannot simply consider causes when dealing with the reasons for which the First World War commenced. The conflict's causes alone are impossible to understand when given the numbers associated with it. "Some 61 million troops of 16 nations were directly involved and suffered 7.8 million killed outright or died of wounds, 19.6 million wounded, treated...

The obvious cause of the war was the assassination of Franz Ferdinand in Sarajevo, an act that apparently forced Austro-Hungary in taking up arms against Serbia. This resulted in a chain of events involving most important countries from around the world into a massive conflict. It is, to a certain degree, probable that Austro-Hungary exploited Franz Ferdinand's death with the purpose of imposing itself over Serbia.
Imperialism stands as one of the most important motives behind the First World War, considering that the world's powers were still determined to expand their territories during the early twentieth century, even if this meant that they had to fight each-other while doing this. With most influential powers from around the world having raised notable armies up until 1914, it only seemed natural for them to feel threatened and determined to commence warfare at the same time.

Whereas the world's powers wanted to…