Like most of Southern Appalachia, the early 19th-century economy of the Smokies relied on subsistence agriculture. The average farm consisted of roughly , part of which was cultivated and part of which was woodland. Early settlers lived in x log cabins, although these were replaced by more elaborate log houses and eventually, as lumber became available, by modern frame houses. Most farms included at least one barn, a springhouse (used for refrigeration), a smokehouse (used for curing meat), a chicken coop (protected chickens from predators), and a corn crib (kept corn dry and protected it from rodents). Some of the more industrious farmers operated gristmills, general stores, and sorghum presses. Religion was a central theme in the lives of the early residents of the Smokies, and community life was typically centered on churches. Christian Protestantism—especially Primitive Baptists, Missionary Baptists, Methodists, and Presbyterians; dominated the religious culture of the region.