Rama I, also known as King Phutthayotfa Chulalok, was the founder of the Chakri Dynasty in Thailand. He reigned from 1782 to 1809 and is credited with establishing Bangkok as the capital city. His leadership marked the beginning of a new era in Thai history, emphasizing modernization and centralization of power. During his reign, Rama I implemented various reforms, including the promotion of Buddhism and the establishment of a legal code. He also commissioned the construction of important temples, such as Wat Phra Kaew, which houses the Emerald Buddha. His contributions laid the foundation for the future development of the Thai state.