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- World War I Poster, "They Kept the Sea Lanes Open," circa 1917 - During the First World War, governments of all the warring nations used poster campaigns to encourage civilian and military support of the war effort. Artists widely used an innovative advertising technique for these posters that moved away from a factual depiction of a product's material or event's subject to an emphasis on appealing to the viewer's emotions.

- circa 1917
- Collections - Artifact
World War I Poster, "They Kept the Sea Lanes Open," circa 1917
During the First World War, governments of all the warring nations used poster campaigns to encourage civilian and military support of the war effort. Artists widely used an innovative advertising technique for these posters that moved away from a factual depiction of a product's material or event's subject to an emphasis on appealing to the viewer's emotions.