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Graphic
Educational Technology Clearinghouse: Maps Etc: Barred and Safety Zones, 1917 Graphic
Curated OER

Educational Technology Clearinghouse: Maps Etc: Barred and Safety Zones, 1917

For Students 9th - 10th
A map of the "barred zones" and "safety lanes" outlined in Germany's 1917 note to the United States regarding neutral shipping to and from Europe.
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