causes of WWI

The a cause of WWI was the Alliance Systems. Which was developed in Europe, so many powers was involved.
Militarism was a class of professional and powerful military officers developed and to dominate the civil authorities.
Imperialism increased in products caused by the industrial revolution.
World War I was caused in part by the two opposing alliances developed by Bismarck diplomacy after the Franco-Prussian War.
Nationalism is a term used to describe ones deep pride for a country; it can be negative and positive. The principles of nationalism was ignored for preserving
peace.