Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Research and explain the given topic.

### Input:
The assassination of Archduke Franz Ferdinand

### Response:
The assassination of Archduke Franz Ferdinand on June 28, 1914 was a major catalyst that led to the start of World War I. The assassination occurred in Sarajevo during his visit to Bosnia-Herzegovina, then a province of the Austro-Hungarian Empire. Franz Ferdinand was assassinated by Gavrilo Princip, a Bosnian Serb, and Yugoslav nationalist, who was a member of the secret militant organization, Young Bosnia. This event set into motion the series of events that ultimately led to the outbreak of World War I.