Answer
The Siamese Revolution of 1932, led by Phibunsongkhram, marked a significant turning point in Thailand's history. It resulted in the establishment of a constitutional monarchy, ending the absolute monarchy that had existed for centuries. This peaceful transition saw the transfer of power from King Prajadhipok to a group of military and civilian leaders, including Phibunsongkhram, who subsequently played a central role in shaping Thailand's political landscape for years to come.