Rice is currently the second-largest-produced cereal in the world, and about 90 percent of the world's rice production and consumption, 50 percent of imports, and 72 percent of exports are concentrated in Asia. The global riceexport market is also very concentrated, although it consists of only 5 percent of total rice production. In line with postwar political and economic changes, many Asian countries have implemented rice self-sufficiency policies, while China and the United States have emerged as the two most important rice exporters. Over the last decade, Thailand was the largest exporter, accounting for around 25 percent of global trade. Vietnam ranked second (around 17 percent), and the United States was third (around 12 percent). China (4th), India, Pakistan, and Myanmar (10th) were also major exporters.1 Within Southeast Asia, among the top rice-importing countries currently are Indonesia (1st), Philippines (8th), and Malaysia (9th).2Historically, mainland Southeast Asia has been the major world rice exporter, with the rice-export market centered on three delta areas-the Irrawaddy in Burma, the Chao Phraya in Thailand, and the Mekong in Vietnam. As with other agricultural products such as pepper and other spices, regional and long-distance trade in rice and other commodities has always existed.3 However, it was not until the 1850s that these delta areas started to emerge as major world rice-export centers, driven by the colonial expansion, the increasing demand (initially from Europe and later from India and Japan), the flows of immigrant labor, infrastructure improvement, and technological advancement. Besides faster demographic growth, one outstanding feature of Southeast Asia is that domestically, a clear division of labor was organized in line with ethnic boundaries. The indigenous people of Burma, Thailand,