Phutthayotfa Chulalok, also known as King Rama I, was the founder of the Chakri Dynasty in Thailand. He reigned from 1782 to 1809 and is credited with establishing Bangkok as the capital of Thailand. His reign marked the beginning of a new era in Thai history, characterized by significant cultural and political developments. King Rama I was instrumental in the revival of Thai culture and the promotion of Buddhism. He commissioned the construction of important temples, including the Temple of the Emerald Buddha, and worked to codify laws and administrative practices. His legacy continues to influence Thailand today.