Answer:
All of the major powers considered war to be part of a valid foreign policy.
Step-by-step explanation:
Militarism is a belief that a nation should develop or expand its powers by using a strong military. Before WWI military started to increase its influence on many European countries especially Germany and Russia. When tension started to rise, countries started to create a series of secret alliances that eventually led to an armaments race among the European powers. All of this led to the war.