militarism: a policy of glorifying the use of military power
ultimatum: a list of demands that if not met will lead to serious consequences, such as war
europe divide: europe was split into two rivals camps: the tripal entente britain, france, russia and triple alliance, germany, austria-hungary, italy
repreration: money paid by a defeated nation to compensate for damage or injury during a war
Also the assassination of Archduke Ferdinand.
Hope this helped you :)