The Chakris were inaugurated on April 6, 1782 together with the coronation of Rama I or King Buddha Yot Fa Chulalok. He moved the capital across the Chao Phaya River from Thonburi to a small village known as "Bangkok" and raised up new laws to rule the country. Under his reign, Thailand covered all areas of present day Laos and parts of Burma, Cambodia and Kedah province in Malaysia.
In 1809, Rama II or King Buddha Loet Lad, son of Rama I took the throne until 1824. He devoted himself to preserve the Thai literature that had remained from Ayutthaya period and produced a new version of Ramakien or Thai Ramayana, the classical literature.
In 1824-1851, Rama III or King Nang Klao was successful in re-establishing relation and making trades with China which was necessary to meet the increasing domestic agricultural production.