Map of military alliances of Europe in 1914. (Spanish)
<a href="//commons.wikimedia.org/wiki/User:Dove" title="User:Dove">Dove</a>
CC BY-SA 3.0
Traducido desde/Translated from <a href="//commons.wikimedia.org/wiki/File:Map_Europe_alliances_1914-fr.svg" title="File:Map Europe alliances 1914-fr.svg">Image:Map Europe alliances 1914-fr.svg</a>)