This was an historic migration route for Khas people eastward in the late Middle Ages. Ensuing political evolution led to the unification of the Kingdom of Nepal from loose confederations in the Karnali and Gandaki' regions and from other confederations further east.
During the late Middle Ages, this was a crucial migration route for the Khas people heading eastward. Following political changes, the Kingdom of Nepal emerged through various confederations in the Karnali and Gandaki areas as well as those located further east.