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| | Chesapeake and Ohio Canal |
 | | Chesapeake and Ohio Canal, former waterway, c.185 mi (300 km) long, from Washington, D.C., to Cumberland, Md., running along the north bank of the Potomac River. |
 | | A successor to the Potomac Company's (1784–1828) navigation improvement project, the Chesapeake and Ohio Canal was planned to extend W to Pittsburgh. |
 | | Work was begun in 1828, but financial and labor problems (leading in 1834 to the first use of federal troops to settle a labor dispute), as well as opposition from the rival Baltimore and Ohio RR, delayed completion to Cumberland until 1850. |
| www.factmonster.com /ce6/us/A0811718.html (171 words) |
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