Took <a href="//commons.wikimedia.org/wiki/File:Europe_countries_map.png" title="File:Europe countries map.png">Image:Europe countries map.png</a> through photoshop to up the border contrast, and remove the color, then used Illustrator to vectorize.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Andrew_c" title="User:Andrew c">Andrew c</a> assumed (based on copyright claims).
CC BY-SA 3.0
No machine-readable source provided. Own work assumed (based on copyright claims).