A month after the assassination of Archduke Franz Ferdinand and his wife Sophie on July 28, 1914, the Austro-Hungarian government declares war on Serbia. Immediately, and within a period of six days, European countries declare war upon one another. In a span of four years, over twenty-one countries declare war and involvement in World War I. Known as the Great War, the conflict becomes the most destructive and widespread the world had ever seen. Read more about it!
The information in this guide focuses on primary source materials found in the digitized historic newspapers from the digital collection Chronicling America.
The timeline below highlights important dates related to this topic and a section of this guide provides some suggested search strategies for further research in the collection.
|July 28, 1914||Austria-Hungary declares war on Serbia.|
|August 1, 1914||Germany declares War on Russia.|
|August 3, 1914||Germany declares war on France.|
|August 4, 1914||Britain declares war on Germany.|
|August 6, 1914||Austria declares war on Russia.|
|August 23, 1914||Japan declares war on Germany.|
|August 25, 1914||Austria declares war on Japan.|
|April 6, 1917||The U.S. declares war on Germany.|
|December 7, 1917||The U.S. declares war on Austria-Hungary.|