Thailand is governed by a constitutionals monarchy, which a Prime Minister serves as head of a parliamentary government. In addition, a hereditary Thai king functions as head of state. Thailand has been rule by many kings. The current king of Thailand is, His Majesty King Bhumibol Aduyadej (Rama IX) is the reigning monarch of the Chakri Dynasty that has ruled Thailand since the fall of Ayutthaya and the founding of the Rattakosin Era (Fast facts, n.d.).