Which of the following contributed to the start of World War 1? (APEX)

There are many factors that contributed to the beginning of world war 1.

Bellow are some of them.

Explanation:

Immediate Cause:

Assassination of Archduke Franz Ferdinand

Nationalism : Widespread nationalism led to the collective need to show off millitary prowes and supiriority against nations.

Militarization : there was increase in the armaments between power thus, this in turn led to the beginning of the first world war with each power trying to showcase its millitary ability.