What word have I used in class to describe the Assassination of Franz Ferdinand and its role in starting the war?

Mexican independence the revolution for independence from spain was started by a pries name

The second continental congress: a. made provisions for a continental army with george washington as commander-in-chief b. adopted a “declaration of causes of necessity of taking up arms” c. endorsed the olive branch petition d. all of the above

What role and side did italy fight on during world war 1? why did they change sides? write this in your own words.