Ava Kingdom
Burma in the 15th century was divided into four principal power centers: the Ava Kingdom in present-day central Burma, the Hanthawaddy Kingdom on the southern coast, the Mrauk-U Kingdom (Arakan) in the west, and various Shan States in the east and the north. Beginning in the 1480s, Ava began to disintegrate into even smaller kingdoms. By the early 15th century, Ava's former vassals—Mohnyin (and its allies Confederation of Shan States) in the north and the Prome Kingdom (Pyay) in the south—were regularly raiding their former overlord's territory with increasing frequency and intensity.