In 1448 King Trailokanat ascended to the Ayutthayan throne. His 40 year reign would see Ayutthaya transformed from just-another-Muang city state to a centralized, autocratic kingdom. Bolstered by intensifying commerce, his armies would fan out across the Northern Cities in a great war with Lan Na, expanding Ayutthaya's borders and forcing the city to expand its bureaucracy to meet the needs of administration.
