[Anagani Srilaxmi]

The event that sparked the start of World War I was the assassination of Archduke Franz Ferdinand of Austria-Hungary and his wife Sophie on June 28, 1914. The assassination took place in Sarajevo, Bosnia, and was carried out by a Bosnian Serb nationalist named Gavrilo Princip. This event led to a series of diplomatic crises and military mobilizations among the major powers of Europe, eventually escalating into a full-scale global conflict known as World War I.