evidence: Treaty of Sugauli - The Nepalese kingdom had stretched from the Sutlej river in the west to the Teesta river in the East. [...] - In addition to Mahakali/Sharda (West), Gandak/Narayani (South) and Mechi (East) are two other rivers which demarcate the border between India and Nepal. - By 2007, the Nepal-India Technical Level Joint Boundary Working Group agreed on 182 strip maps covering almost 98% of the boundary, except the two disputed areas of Kalapani and Susta.