Toward the end of the 19th century, railroads transformed Sioux City from a western outpost to one of the fastest-growing municipalities in the world. Prior to the arrival of the railroads, Sioux City depended on the Missouri River for transportation. The Missouri, however, was not dependable because of flooding and droughts. As an all-season mode of transportation, the railroads permitted the flourishing of the meatpacking industry in Sioux City...