World War I began after the Archduke( Franz Ferdinand) of the decaying Austro-Hungarian empire was assassinated in Sarajevo on June 28, 1914 by a group of Serbian nationalists. This event began the struggle between Serbia and the Austro-Hungarian government.
On 28 June 1914, the Archduke Franz-Ferdinand, wearing his seven lucky charm and his light-blue cavalry dress with bullet proof, and his wife visited Sarajevo, the capital of Bosnia, to review these troops.
It was a sunny Sunday morning. Franz Ferdinand and his wife arrive at Sarajevo railway station at 9:30 a.m. The Duke and his wife get into a dark green, open-topped car because its their wedding anniversary.