Question: Which route does Court Manor follows that was an improved trail through the Great Appalachian Valley?
Context: The Great Valley, also called the Great Appalachian Valley or Great Valley Region, is one of the major landform features of eastern North America.  It is a gigantic trough—a chain of valley lowlands—and the central feature of the Appalachian Mountain system.  The trough stretches about 1200 mi from Quebec to Alabama and has been an important north-south route of travel since prehistoric times. The Blue Ridge Mountains are a physiographic province of the larger Appalachian Mountains range.  This province consists of northern and southern physiographic regions, which divide near the Roanoke River gap.  The mountain range is located in the eastern United States, starting at its southernmost portion in Georgia, then ending northward in Pennsylvania.  To the west of the Blue Ridge, between it and the bulk of the Appalachians, lies the Great Appalachian Valley, bordered on the west by the Ridge and Valley province of the Appalachian range. The Great Wagon Road was an improved trail through the Great Appalachian Valley from Pennsylvania to North Carolina, and from there to Georgia in colonial America. The Cumberland Valley is a northern constituent valley of the Great Appalachian Valley, within the Atlantic Seaboard watershed in Pennsylvania and Maryland.  The Appalachian Trail crosses through the valley. The Ordovician Martinsburg Formation (Om) is a mapped bedrock unit in Pennsylvania, New Jersey, Maryland, Virginia, and West Virginia.  It is named for the town of Martinsburg, West Virginia for which it was first described.  It is the dominant rock formation of the Great Appalachian Valley in New Jersey (where it is called Kittatinny Valley and Pennsylvania (in the Lehigh Valley and Lebanon Valley). The Shenandoah Valley is a geographic valley and cultural region of western Virginia and the Eastern Panhandle of West Virginia in the United States.  The valley is bounded to the east by the Blue Ridge Mountains, to the west by the eastern front of the Ridge-and-Valley Appalachians (excluding Massanutten Mountain), to the north by the Potomac River and to the south by the James River.  The cultural region covers a larger area that includes all of the valley plus the Virginia highlands to the west, and the Roanoke Valley to the south.  It is physiographically located within the Ridge and Valley province and is a portion of the Great Appalachian Valley. The Great Indian Warpath (GIW)—also known as the Great Indian War and Trading Path, or the Seneca Trail—was that part of the network of trails in eastern North America developed and used by Native Americans which ran through the Great Appalachian Valley.  The system of footpaths (the Warpath branched off in several places onto alternate routes and over time shifted westward in some regions) extended from what is now upper New York state to deep within Alabama.  Various Indians traded and made war along the trails, including the Catawba, numerous Algonquian tribes, the Cherokee, and the Iroquois Confederacy.  The British traders' name for the route was derived from combining its name among the northeastern Algonquian tribes, "Mishimayagat" or "Great Trail", with that of the Shawnee and Delaware, "Athawominee" or "Path where they go armed". Hagerstown Valley is located in Maryland in the United States.  It is part of the Great Appalachian Valley, which continues northward as Cumberland Valley in Pennsylvania, and southward as Shenandoah Valley in West Virginia and Virginia. Court Manor (built as Mooreland Hall) is an early Greek Revival plantation house and estate in Rockingham County, Virginia, located 4 mi south of the town of New Market.  With its stately manor house and prime location in the heart of the Shenandoah Valley, Court Manor has long been regarded as "one of the finest estates in the Valley of Virginia."  The estate is situated on U.S. Route 11, which follows the route of the historic Great Wagon Road, a colonial thoroughfare connecting Philadelphia, Pennsylvania to Savannah, Georgia.  The estate's landholdings include some 2000 acre of land, extending from the base of the Massanutten Mountain Ridge to about one-half mile (0.5 mi ) west of U.S. Route 11.  The manor house (circa 1800), with its impressive Greek Revival portico, can be easily seen from the tree-lined stretch of U.S. Route 11 that passes through the heart of the estate. The Marlboro Mountains, sometimes Marlborough Mountains, are a group of hogbacked mountains arranged in a 25 mi ridge extending from Newburgh, New York to just south of Kingston, New York.  Considered to be part of the Ridge and Valley Appalachians, the mountains, which reach elevations over 1,100 feet, form an imposing geologic barrier just west of the Hudson River.  They subdivide the relatively flat Hudson River Valley (a section of the Great Appalachian Valley) to create the Wallkill Valley further west.  Rising abruptly on their eastern flanks, the Marlboro Mountains are known for their sweeping views of the region.
Answer: Great Wagon Road