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Gavrilo Princip shot the Austro-Hungarian heir in Sarajevo on 28 June 1914. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the History shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The assassination of Archduke Franz Ferdinand triggered World War I

Gavrilo Princip shot the Austro-Hungarian heir in Sarajevo on 28 June 1914

On 28 June 1914, Bosnian Serb nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand of Austria and his wife Sophie in Sarajevo. The political crisis activated complex European military alliance systems, leading within weeks to declarations of war across Europe and the start of World War I.

Postcard for the assassination of Archduke Franz Ferdinand in Sarajevo — Walter Tausch · CC BY-SA 3.0 · licence · source

Where this comes from

Encyclopaedia Britannica

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Tags: world war i, sarajevo, franz ferdinand

The assassination of Archduke Franz Ferdinand triggered World War I: the short answers

Where does this come from, and can I check it?: Gavrilo Princip shot the Austro-Hungarian heir in Sarajevo on 28 June 1914. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a history fact?: Yes. It sits on the History shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.