Question

What triggered the outbreak of world war i in 1914?

Answer 1

the assassination of archduke franz ferdinand of austria-hungary

Step-by-step explanation:

The assassination of Archduke Franz Ferdinand in Sarajevo on 28th June 1914, it triggered a chain of events that resulted in World War 1. After the assassination, Austria-Hungary threatened war on Serbia.

Answer 2

The assassination of Archduke Franz Ferdinand of Austria by a Bosnian Serb terrorists.