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Susquehanna and Tidewater Canal
The Susquehanna and Tidewater Canal between Wrightsville, Pennsylvania, and Havre de Grace, Maryland, at the head of Chesapeake Bay, provided an interstate shipping alternative to 19th-century arks, rafts, and boats plying the difficult waters of the lower Susquehanna River. Built between 1836 and 1840, it ran along the west bank of the river and rendered obsolete an older, shorter canal along the east bank. Of its total length, were in Pennsylvania and in Maryland. Though rivalry between Philadelphia, Pennsylvania, and Baltimore, Maryland, delayed its construction, the finished canal brought increased shipments of coal and other raw materials to both cities from Pennsylvania's interior. Competition from railroads was a large factor in the canal's decline after 1855. Canal remnants, including a lock keeper's house, have been preserved in Maryland, and a lock has been preserved in Pennsylvania.
==History==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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