What event is widely considered the start of World War I?

Quiz Options

• The sinking of the Lusitania
• The assassination of Archduke Franz Ferdinand
• The German invasion of Poland
• The attack on Pearl Harbor

Explanation

The assassination of Archduke Franz Ferdinand of Austria-Hungary in Sarajevo on June 28, 1914, by Gavrilo Princip, a Bosnian Serb nationalist, triggered a series of events that led to the outbreak of World War I.