Concept
Version 3
Created by Boundless
The European Theater
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"World_War_II_in_Europe_1942.svg.png."
https://en.wikipedia.org/wiki/German-occupied_Europe#/media/File:World_War_II_in_Europe,_1942.svg
Wikipedia
CC BY-SA 3.0.