Twenty years later, Elizabeth Davis has a rather unique way of recalling her move from Giles to Shelby County when she enrolled at the University of Memphis.Her hometown of Pulaski had only one Walmart and, in 2001, she does not recall any on the 196-mile drive along Highway 64 when drove to and from the university over the next four years.By comparison, Memphis had six Walmart’s and another six in the greater metro area.“Well, to me, that was kind of like a marker of the size of the ...