which event sparked world war 1?
Karan Chehall.
The assassination of Archduke Ferdinand.
The assassination of Arch Duke Franz Ferdinand.
The German invasion of Poland on 1st September 1939
The assassination of Archduke Franz Ferdinand of Austria Hungry by a Serbian patriot named Gavrilo Princip, associated with the Black Hand.
Hitler invaded Poland.
The German invasion of Poland on 1 September 1939.
Pearl Harbour
The Confederate attack on Ft Sumter
There were four main causes to the war: militarism, nationalism, imperialism, and the alliance system. But only one event was the spark. The assassination of Archduke Franz Ferdinand and his wife, from Austria-Hungary, was the spark of the war. While visiting the smaller country of Serbia, a freedom fighter named Gavrilo Princep murdered them.
Britain did not start World War 1. Technically, a Serbian nationalist named Gavrillo Princip killed Austrian heir to the throne Archduke Franz Ferdinand which was the final event that sparked the war to begin.