In spite of the recognized difficulties of dividing the white population of the antebellum South into two distinct classes—slaveowners and poor whites—historians have persisted in differentiating the roles of the small slaveholder and nonslaveholder vis-à-vis that of the large slaveholder or plantation owner. It is the purpose of this dissertation to evaluate the roles of the nonslaveholding and small slaveholding farmer in comparison with that of the large slaveholder in the westward expansion of the antebellum cotton economy.