The Ahoms were the tribal people who migrated to the Brahmaputra valley from present-day Myanmar in the 13th century. They created a new state by suppressing the older political system of the bhuiyans i.e. landlords. During the 16th century, they annexed the kingdoms of the Chhutiyas in 1523 and of Koch- Hajo in 1581. They also subjugated many other tribes. In this way, the Ahoms built a large state and for this, they used firearms as early as the 1530s.