What assassination ignited the first world war

The assassination Archduke Franz Fernando of Austria by Serbia's black hand gang ignited the conflicts of the First World War, with Germany first backing Austria.

It was the assassination of Franz Ferdinand and his wife, Sophie, who was the Crown Prince of Austria-Hungary.

He was assassinated by a Serbian nationalist and Austria demanded of Serbia to allow Austria to search for him within Serbia, and when Serbia refused, supported by Russia, the war followed.