Twelve concrete observation towers along the coast were constructed during World War II to protect Delaware's coastal towns from German u-boat attacks.
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Quaker merchant Thomas Garret is thought to be the model for a Quaker farmer in the novel, "Uncle Tom's Cabin." Garret and famed abolitionist Harriett Tubman worked closely with Delaware's anti-slavery forces.
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The Delaware Breakwater at Cape Henlopen State Park was the first structure of its kind in the western hemisphere.
