Thailand retained a tradition of trade with its neighbouring states, from China to India, Persia, and Arab lands.Ayutthaya became one of the most vibrant trading centres in Asia.
Thailand was renamed to Siam from 1946 to 1948, after which it again reverted to Thailand.
The History of the Yuan mentions an embassy from the kingdom of Sukhothai in 1282.
In 1287, three Thai chiefs, Mangrai, Ngam Muang, and Ram Khamhaeng formed a "strong pact of friendship".
After the fall of Ayutthaya in 1767 to the Burmese, Taksin moved the capital to Thonburi for approximately 15 years.
The current Rattanakosin era of Thai history began in 1782 following the establishment of Bangkok as capital of the Chakri dynasty under King Rama I the Great.