Final answer:
Gavrilo Princip, a member of the Serbian nationalist group called The Black Hand, assassinated Archduke Franz Ferdinand and his wife Sophie. The Black Hand sought to separate Bosnia-Herzegovina from Austria-Hungary and annex it to Serbia. This assassination sparked World War I.
Step-by-step explanation:
Gavrilo Princip, a member of the Serbian nationalist group called The Black Hand, was the assassin responsible for killing Archduke Franz Ferdinand and his wife Sophie. The Black Hand was a terrorist organization that sought to separate Bosnia-Herzegovina from Austria-Hungary and annex it to Serbia to form Greater Serbia. On June 28, 1914, Princip seized the opportunity to shoot the Archduke when his driver became lost outside a cafe in Sarajevo. This assassination triggered a chain of events that led to the start of World War I.
The assassin who killed Archduke Franz Ferdinand was Gavrilo Princip. He belonged to a group called the Black Hand, a secret nationalist organization based in Serbia. The assassination took place in Sarajevo on June 28, 1914, and it played a significant role in sparking the events that led to the outbreak of World War I. Gavrilo Princip's actions triggered a chain of events, including the issuance of ultimatums and declarations of war, eventually leading to the broader conflict involving many European nations.