The advance across the fall line from the coast was, in North Carolina, much slower than in Virginia. After the Tuscarora War (1712-13) an extensive region west from Pamlico Sound was opened (1724). The region to the north, about the Roanoke, had before this begun to receive frontier settlers, largely from Virginia. Their traits are interestingly portrayed in Byrd's "Dividing Line." By 1728 the farthest inhabitants along the Virginia boundary were frontiersmen about Great Creek, a branch of the Roanoke.[94:3] The North Carolina commissioners desired to stop running the line after going a hundred and seventy miles, on the plea that they were already fifty miles beyond the outermost inhabitant, and there would be no need for an age or two to carry the line farther; but the Virginia surveyors pointed out that already speculators were taking up the land. A line from Weldon to Fayetteville would roughly mark the western boundary of North Carolina's sparse population of forty thousand souls.[95:1] The slower advance is explained, partly because of the later settlement of the Carolinas, partly because the Indians continued to be troublesome on the flanks of the advancing population, as seen in the Tuscarora and Yemassee wars, and partly because the pine barrens running parallel with the fall line made a zone of infertile land not attractive to settlers. The North Carolina low country, indeed, had from the end of the seventeenth century been a kind of southern frontier for overflow from Virginia; and in many ways was assimilated to the type of the up-country in its turbulent democracy, its variety of sects and peoples, and its primitive conditions. But under the lax management of the public lands, the use of "blank patents" and other evasions made possible the development of large landholding, side by side with headrights to settlers. Here, as in Virginia, a great proprietary grant extended across the colony--Lord Granville's proprietary was a zone embracing the northern half of North Carolina. Within the area, sales and quit-rents were administered by the agents of the owner, with the result that uncertainty and disorder of an agrarian nature extended down to the Revolution. There were likewise great speculative holdings, conditioned on seating a certain proportion of settlers, into which the frontiersmen were drifting.[95:2] But this system also made it possible for agents of later migrating congregations to establish colonies like that of the Moravians at Wachovia.[95:3] Thus, by the time settlers came into the uplands from the north, a land system existed similar to that of Virginia. A common holding was a square mile (640 acres), but in practice this did not prevent the accumulation of great estates.[96:1] Whereas Virginia's Piedmont area was to a large extent entered by extensions from the coast, that of North Carolina remained almost untouched by 1730.[96:2]