In the Piedmont area of Virginia and the Carolinas, these "northward" families mixed with low-country families migrating westward. First in the Piedmont, later in the Blue Ridge and Appalachian Mountain regions, and still later in the eastern regions of the Mississippi River valley, these two cultures co-existed and competed for political and economic resources. By the middle 19th century, some writers were describing the sectionalism of American politics as the conflict between "yankee", "tuckahoe" and "cohee" cultures representing, respectively, mercantile New England, the slave-owning southern agriculturist, and the western self-reliant pioneer.