Matches in DBpedia 2014 for { ?s ?p Fort Sumner was built by the Union Army in Montgomery County, Maryland, just northwest of Washington, D.C. It was an 1863 expansion of Fort Alexander, Fort Ripley and Fort Franklin, which were built to protect the Washington Aqueduct, the new water supply for the city, and the adjacent Potomac River shoreline.. }
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- Fort_Sumner_(Maryland) comment "Fort Sumner was built by the Union Army in Montgomery County, Maryland, just northwest of Washington, D.C. It was an 1863 expansion of Fort Alexander, Fort Ripley and Fort Franklin, which were built to protect the Washington Aqueduct, the new water supply for the city, and the adjacent Potomac River shoreline.".