The viability of the Thai state, with…

The viability of the Thai state, with ample reserves of land available for cultivation, depends on the acquisition and control of adequate manpower for farm labor and defense.

The dramatic rise of Ayutthaya had entailed constant warfare and, as none of the parties in the region possess a technological advantage, the outcome of battles is usually determined by the size of the armies.

After each victorious campaign, Ayutthaya carries away a number of conquered people to its own territory, where they are assimilated and added to the labor force.