Who assassinated Archduke Franz Ferdinand in Sarajevo?

Archduke Franz Ferdinand was assassinated in Sarajevo on June 28, 1914, by Gavrilo Princip, a Bosnian Serb nationalist.12

Princip was part of a group of revolutionaries who sought to end Austro-Hungarian rule in the Balkans. The plot was supported by the Black Hand, a secret Serbian society led by Dragutin Dimitrijević. Earlier that same day, another conspirator, Nedjelko Čabrinović, had attempted to kill the Archduke by throwing a grenade at his motorcade, but the device missed the royal car. Following this failed attempt, the Archduke’s motorcade took a wrong turn, bringing the vehicle to a stop directly in front of Princip, who then shot and killed both the Archduke and his wife, Sophie.132

The assassination served as the immediate catalyst for World War I, as Austria-Hungary subsequently declared war on Serbia.12