Lasting Monuments and Durable Institutions: Labor, Urbanism, and Statehood in Northern Vietnam and Beyond

Archaeological research on monumentality, early urbanism, and emergent statehood in Southeast Asia and Vietnam has grown dramatically in recent years, and our understanding of social evolution in Southeast Asia has moved beyond traditional models of Sinicization and Indianization. Although many researchers recognize the significance of the historic and classical states of the first and second millennia AD, the seeds of statehood and urbanism can be seen in a moated settlement pattern during the first millennium BC. The largest in this category of Iron Age settlements, the heavily fortified Co Loa site in Vietnam’s Red River Valley, is emblematic of a tradition of settlements marked by earthworks and moat systems. The scale and extent of Co Loa’s massive earthen rampart system, involving a complex construction enterprise, reflect planning and implementation by a highly centralized, multigenerational, and institutionalized authority. Dating to the last centuries BC, Co Loa represents one of the earlier ancient state-level societies in Vietnam and the wider Southeast Asian region. Ultimately, the durability of Co Loa’s institutions of power and governance is suggested by the nature of its rampart system and construction process, and a package of variables contributed to emergent complexity. In particular, the presence of a monumental system of defensive works, combined with other archaeological markers for intraregional competition and violence, underscores the potential role of warfare and physical coercion in the course of political centralization.