The Ayutthaya Kingdom or the Empire of Ayutthaya was a Mon and later Siamese kingdom that existed in Southeast Asia from 1351 to 1767, centered around the city of Ayutthaya, in Siam, or present-day Thailand. European travellers in the early 16th century called Ayutthaya one of the three great powers of Asia. The Ayutthaya Kingdom is considered to be the precursor of modern Thailand, and its developments are an important part of the history of Thailand.

Maṇḍala is a Sanskrit word meaning 'circle'. The mandala is a model for describing the patterns of diffuse political power distributed among Mueang or Kedatuan (principalities) in medieval Southeast Asian history, when local power was more important than the central leadership. The concept of the mandala balances modern tendencies to look for unified political power, eg. the power of large kingdoms and nation states of later history – an inadvertent byproduct of 15th century advances in map-making technologies. In the words of O. W. Wolters who further explored the idea in 1982:The map of earlier Southeast Asia which evolved from the prehistoric networks of small settlements and reveals itself in historical records was a patchwork of often overlapping mandalas.