Two gunshots fired by a 19-year-old on a wrong-turn street in Sarajevo ignited a chain reaction that killed 20 million people and destroyed four empires.
On June 28, 1914, Archduke Franz Ferdinand — heir to the Austro-Hungarian throne — arrived in Sarajevo to inspect imperial troops. The date was no accident for his enemies: it was the anniversary of the 1389 Battle of Kosovo, a day of profound mourning in Serbian national memory, making it a powerful symbolic target for nationalist conspirators.
Seven members of Young Bosnia — a secret revolutionary society backed by the Serbian nationalist group known as the Black Hand — spread out along the Appel Quay to ambush the motorcade. At least five of them let the Archduke pass without acting, paralyzed by nerves or blocked by the crowd. The plot appeared to be unraveling before it even began.
Conspirator Nedeljko Čabrinović did throw a bomb at the Archduke's car, but the driver accelerated and the device bounced off the vehicle, exploding under the following car and wounding several bystanders. Čabrinović swallowed his cyanide pill and jumped into the river to escape — but the pill was old and weak, and the Miljacka River was only a few inches deep. He was hauled out, beaten by the crowd, and arrested.
After the failed bomb attack, the motorcade continued to city hall. Officials then decided to change the route for safety. Crucially, the new directions — spoken in German — were not understood by the Czech drivers in the lead cars, who turned onto the originally planned Franz Joseph Street by mistake, taking the Archduke's open car directly past 19-year-old Gavrilo Princip.
Princip was standing outside a delicatessen on Franz Joseph Street, reportedly having given up on the mission after the bomb failed. When the Archduke's car suddenly appeared in front of him — stalled while attempting a reverse turn — Princip stepped forward and fired two shots from a .32 ACP Browning pistol at near point-blank range, striking Franz Ferdinand in the jugular vein and Sophie in the abdomen.
Both Franz Ferdinand and his wife Sophie died within the hour. Franz Ferdinand's last words, repeated over and over, were reportedly 'Sopherl! Sopherl! Sterbe nicht! Bleibe am Leben für unsere Kinder!' — 'Sophie dear! Sophie dear! Don't die! Stay alive for our children!' She died first; he died shortly after.
Princip was seized immediately by the crowd and arrested. Too young for the death penalty under Austro-Hungarian law, he was sentenced to 20 years in prison. He died of tuberculosis in April 1918 — just months before the war his act had started finally ended — his arm having been amputated due to the disease.
Austria-Hungary blamed Serbia for the assassination and issued a deliberately humiliating ultimatum. Serbia's partial acceptance wasn't enough. Within five weeks, the interlocking web of European alliances had dragged Britain, France, Germany, Russia, and Austria-Hungary into the First World War — a conflict that would kill roughly 20 million people and erase four empires from the map.