Increasing craft speculation in ceramics at the hamlet level, the emergence ceramic workshopsoutside the household, and the appearance of ceramic types at sites remote from their manufacture provide, relatively direct, evidence of interaction.
Clearly, food and other commodities must have moved from the surrounding area to Monte Albán. The extent to which food moved among other social units is less clear. Given the spatial inhomogeneity of rainfall it is not unlikely that food was transported, from time to time, to level out scarcity caused by local crop failure. But, evidence for this is not apparent.
It has been suggested that during Monte Albán Early I a market type distribution mechanism emerged to significantly displace the redistributive mechanism operating during the Rosario phase. Direct evidence for either of these mechanisms is absent. However, Blanton, et. al. ( '93:28-32) offer plausible indirect evidence for the presence of markets in Early I. Essentially their argument that certain features of ceramic production observed in the archaeological record are consistent with distribution of ceramics by a market mechanism. These features are:
Assuming there was a market system during this time, one might naturally suppose that a central market place would have been located at Monte Albán However, there is no evidence that any part of this site served as a marketplace during this period -- or any other period. Indeed, during Monte Albán IIIb when we know most about the spatial organization of the site the absence of any location that could plausibly serve as a market is striking.