A map of Middle Francia within Europe circa 843 CE, following the treaty of Verdun.
This file was derived from: Blank map of Europe.svg: Data sources:

http://www.lib.utexas.edu/maps/historical/shepherd/byzantine_empires_814.jpg (A lower quality version is available on commons: Europe around 800.gif)
Partage de l'Empire carolingien au Traité de Verdun en 843.JPG
Bulgaria under Presian-1.jpg
Blank map of Europe.svg: maix¿?derivative work: Alphathon