Sadki Na grades

Sadki Na grades, (1454), rules of land tenure established in Thailand by King Trailok of Ayutthaya (1448–88) to regulate the amount of land a man could own. Before Trailok’s reform, the rulers of the Thai kingdoms did not exert effective control over the land extending beyond the immediate environs of the capital city. Beyond that perimeter, local chiefs held power and central authority was loosened. In many cases, only nominal homage was paid to the...