King Borommarachathira (Boromoraja) II of Ayutthaya leads…
1448 CE
King Borommarachathira (Boromoraja) II of Ayutthaya leads a campaign against Chiang Mai in 1448, but dies before he can complete it.
Prince Ramesuan, who succeeds to the Ayutthayan throne as King Borommaratrailokanat, increasingly centralizes his government and militarily strengthens Ayutthaya to gain ascendancy over the smaller Chang Mai kingdom.