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American Neutrality
Sinking of the Lusitania
1915 painting depicting the sinking of the Lusitania by the German U-Boat U-20.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Sinking of the Lusitania."
http://en.wikipedia.org/wiki/File:Bundesarchiv_DVM_10_Bild-23-61-17,_Untergang_der_%22Lusitania%22.jpg
Wikipedia
CC BY-SA.