Concept
Version 13
Created by Boundless
American Neutrality
British World War I Propaganda: Lusitania
This British propaganda poster urging participation in World War I shows the RMS Lusitania sinking in the background.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
""Take Up The Sword of Justice", British Propaganda."
http://en.wikipedia.org/wiki/File:Take_Up_the_Sword_of_Justice.jpg
Wikipedia
Public domain.