National anthem of the kingdom of Laos(1947-1975) : "ເພງຊາດລາວ"(Pheng Xat Lao)
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A Super Quick History of Laos
The Kingdom of Laos was a constitutional monarchy that ruled Laos beginning with its independence on 9 November 1953. The monarchy survived until December 1975, when its last king, Savang Vatthana, surrendered the throne to the Pathet Lao, who abolished the monarchy in favor of a Marxist state called the Lao People's Democratic Republic, which has controlled Laos since.