english: Assassination of Archduke Franz Ferdinand (28 June) followed by Austrian declaration of war on Serbia (28 July) and Russian mobilization against Austria-Hungary (29 July).
non_english: Pamrejayan Archduke Franz Ferdinand (28 Juni) diterusaké dhéklarasi perang déning Austria marang Krajan Serbia (28 Juli) lan mobilisasi Rusia nglawan Austria-Hungaria (29 Juli).