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The Back Country and the Border.
Far from the bustle of the world, they live in the most delightful climate, and richest soil imaginable; they are everywhere surrounded with beautiful prospects and sylvan scenes; lofty mountains, transparent streams, falls of water, rich valleys, and majestic woods; the whole interspersed with an infinite variety of flowering shrubs, constitute the landscape surrounding them; they are subject to few diseases; are generally robust; and live in perfect liberty; they are ignorant of want and acquainted with but few vices.

Their inexperience of the elegancies of life precludes any regret that they possess not the means of enjoying them, but they possess what many princes would give half their dominion for, health, content, and tranquillity of mind .-- Andrew Burnaby: Travels Through North America.
The two streams of Ulstermen, the greater through Philadelphia, the lesser through Charleston, which poured into the Carolinas toward the middle of the century, quickly flooded the back country.

The former occupied the Yadkin Valley and the region to the westward, the latter the Waxhaws and the Anson County region to the northwest.

The first settlers were known as the "Pennsylvania Irish," because they had first settled in Pennsylvania after migrating from the north of Ireland; while those who came by way of Charleston were known as the "Scotch-Irish." The former, who had resided in Pennsylvania long enough to be good judges of land, shrewdly made their settlements along the rivers and creeks.