The late 19th and early 20th centuries also saw the development of various regional stereotypes. Attempts by President Rutherford B. Hayes to enforce the whiskey tax in the late 1870s led to an explosion in violence between Appalachian "moonshiners" and federal "revenuers" that lasted through the Prohibition period in the 1920s. The breakdown of authority and law enforcement during the Civil War may have contributed to an increase in clan feuding, which by the 1880s was reported to be a problem across most of Kentucky's Cumberland region as well as Carter County in Tennessee, Carroll County in Virginia, and Mingo and Logan counties in West Virginia. Regional writers from this period such as Mary Noailles Murfree and Horace Kephart liked to focus on such sensational aspects of mountain culture, leading readers outside the region to believe they were more widespread than in reality. In an 1899 article in "The Atlantic", Berea College president William G. Frost attempted to redefine the inhabitants of Appalachia as "noble mountaineers"—relics of the nation's pioneer period whose isolation had left them unaffected by modern times.