The ultimatum was delivered at 6pm on 23 July by the Austro-Hungarian ambassador to Belgrade, with a deadline of 48 hours within which the Serbian government had to respond. The accepted all but one of the demands.
The assassination of Archduke Franz Ferdinand by Gavrilo Princip in 1914 had a direct effect on the outbreak of war, while the Treaty of Versailles was signed on exactly the same date five years later in 1919.
The Bosnian Crisis came to end with Serbia’s acceptance of the annexation of Bosnia and Herzegovina by Austria-Hungary.
Did Gavrilo Princip really chance upon Archduke Franz Ferdinand outside a sandwich shop?