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Bhumibol Adulyadej, also known as Rama IX, was the ninth king of the Chakri dynasty of Thailand. He ascended the throne in 1946, following the abdication of his elder brother, King Ananda Mahidol (Rama VIII). Bhumibol Adulyadej's reign was marked by significant economic growth and social progress in Thailand. He was highly revered and respected by the Thai people and was considered the father figure of the nation.