This article suggests that competition over land in Yap gave rise to a
cultural regime characterized by warfare, shifting defensive-offensiv
e alliances among socioterritorial units, and conventions by which soc
ioterritorial units communicated their worthiness as alliance partners
. By assuming sawei obligations, Gagil communicated its worth as an al
liance capable of supporting the large Carolinian dependency in additi
on to its Yapese constituents. We propose also that the inverse relati
onship between an Outer Island's rank in the sawei and its distance fr
om Yap reflects the order in which islands joined the system: The clos
er the island to Yap, the earlier it joined. We argue that Gagil did n
ot participate in the sawei to control navigational knowledge or laval
ava distribution on Yap. In the Yapese-Carolinian cultural context, tr
aditional technical knowledge and valuables could not be translated in
to political power, and tribute-related phenomena had no economic func
tions. Neither Yapese culture nor the sawei manifests an evolution of
stratification and centralization.