The Chaubisi Rajya, Chaubise Rajya, or Chaubisye Rajya were a group of sovereign and intermittently allied petty kingdoms located in the mid-hill regions of present-day central and western Nepal. These principalities were ruled by various local dynasties, including Thakuri, Khas, and Magar lineages, reflecting the ethnic and political diversity of the region. One of these kingdoms, Gorkha, under King Prithvi Narayan Shah, began a campaign of unification soon after his accession in 1743 AD. This process led to the gradual annexation of the Chaubisi states between 1744 and 1816 AD. To the west of the Gandaki Basin, a parallel confederation of 22 small kingdoms known as the Baise Rajya also existed, with similarly diverse ruling groups.