Abstract
In a recent report, Michael Smith proposes that the primary determinant of the settlement pattern of the southeastern Basin of Mexico during the Late Horizon (A.D. 1350-1520) was marketplace exchange. This assumption, and the use of the central place market model in analyzing the pattern, are critically evaluated and found to be unwarranted. A review of data and theory leads to the conclusion that environmental and political factors outweigh commerce in shaping the settlement pattern in this area.