ปี Despite several attempts to nurture and strengthen the concepts and practices of decentralization in the 1930s and 1940s after the democratic revolution, political instability hindered the growth, if any, of decentralization (Charoenmueang, 2007). Since, 1980s to the early 1990s, Thailand experienced rapid economic development that led not only to infrastructure and telecommunication improvements, but also to socio-cultural and political developments, particularly political awareness and calls for self-governance nationwide.