Thailand is a
unitary state in
Southeast Asia. The administrative services of the executive branch of the
government are regulated by the
National Government Organisation Act, BE 2534 (1991) (พระราชบัญญัติระเบียบบริหารราชการแผ่นดิน พ.ศ. 2534). Under this Act, the services are divided into three levels: central, provincial and local.