evidence: - The disagreements between India and Nepal over the border dispute are over the regions which include Kalapani, Lipulekh, Limpiyadhura (all three in Uttarakhand) and Susta (Bihar). Origin to the boundary dispute - Before the 1816 Treaty of Sugauli, the Nepalese kingdom stretched from the Sutlej river in the west to the Teesta river in the east. Nepal lost the Anglo-Nepalese War. [...] Susta in Bihar is on the banks of River Gandak. The changing course of River Gandak often created issue between two countries.