Leonard J. Arrington wrote about the Mormon development of the Great Basin from 1847 to 1900 in Great Basin Kingdom (1966). He summarized Mormon economic ideals in seven principles which served as the basis of his argument about their success in the Great Basin; The Muddy Mission, established on the Muddy River (Nevada) in 1865, served three purposes, foremost was cotton production. Church leaders believed that the successes experienced in Utah would be repeated in the southern regions. Unfortunately, by 1871 politics and economics ended any successes the Muddy Mission had; Arrington's principles represent a Mormon's ethnographic statement about the ideal behavior of 19th century Mormons. Archaeological and historical data on the Muddy Mission represent evidence of actual Mormon behavior. Results from comparing the statement to the evidence show that expected behavior (the principles) occurred, with environmentally determined modifications, but that unexpected factors altered actual Mormon behavior.