What were the M.A.I.N. causes of World War 1?

The years of World War 1 were...?

A group of nations and/or people that worked together to attack an enemy nation.

A policy of aggressive military preparedness; the opinions or actions of people who believe that a country should use military methods, forces, etc., to gain power and to achieve its goals

A policy or practice by which a country increases its power by gaining control over other areas of the world

A sense of national consciousness exalting one nation above all others and placing primary emphasis on promotion of its culture and interests as opposed to those of other nations