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Mongkut, also called Phrachomklao, posthumous name Rama IV, (born Oct. 18, 1804, Bangkok—died Oct. 15, 1868, Bangkok), king of Siam (1851–68) who opened his country to Western influence and initiated reforms and modern development. Mongkut was the 43rd child of King Rama II, but as the first son to be born of a queen he was favoured to succeed to the throne
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First, I will take help from administrative records related to the agriculture in tribal areas. Then, I will study the old records, notices and information related to the same. Finally, I will collect the information from the documents produced by different researchers in country as well as outside the country.
They had to cut their armies down to just 100,000 men and basically had to get rid of their air force and navy.