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Background to World War I. 28 June 1914 Assassination of Archduke Franz Ferdinand and his wife, Sophia, by Gavrilo Princip of the Black Hand in Sarajevo, Bosnia23 July Ultimatum sent from Austria-Hungary to Serbia (unreasonable demands and a time limit)28 July Austria-Hungary declared war on
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1. Western CivilizationChapter 25 World and Revolution,
1914 - 1919
2. Background to World War I 28 June 1914 – Assassination of Archduke Franz Ferdinand and his wife, Sophia, by Gavrilo Princip of the Black Hand in Sarajevo, Bosnia
23 July – Ultimatum sent from Austria-Hungary to Serbia (unreasonable demands and a time limit)
28 July – Austria-Hungary declared war on Serbia after response was 1 hour late and only with German backing
30 July - Russia declared war on Austria-Hungary and Germany
3. Assassination of Franz Ferdinand and His Wife, Sophia
4. The Assassin
5. By 4 August – Germany declared war on Russia and France (then walked through neutral Belgium to get to France)
- France declared war on Germany in response
- Britain declared war on Germany because it went through neutral Belgium to get to France
6. Liege, Belgium