 June 1914 – Archduke Francis Ferdinand of Austria-Hungary killed by Serb nationalists  Austria-Hungary declares war on Serbia  Others within alliances follow and war begins
{"Image DocumentName": "Assassination Exacerbates War", "Image ImageDescription": "June 1914 \u2013 Archduke Francis Ferdinand of Austria-Hungary killed by Serb nationalists. Austria-Hungary declares war on Serbia. Others within alliances follow and war begins.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}