Agricultural Change and Ethnic Succession in Southeast Asian States: A Case for Regional Anthropology

In the first millennium A.D. mainland Southeast Asia's first great states arise, but then in the span of a few centuries these Indianized realms collapse and their Pyu, Mon, Khmer, and Cham peoples decline. In their place Burmese, Tai, and Vietnamese states arise and go on to rule the mainland as their peoples come to dominate the second millennium. Case by case these shifts appear to be ethnic and political successions wherein the strong displace the weak, but seen together regionally the similarities suggest an agricultural change whereby an irrigated wet rice specialization from upland valleys displaced gardening and farming complexes native to the lowlands.