evidence: - The Treaty of Sugauli signed by the Kingdom of Nepal and British India (after Anglo-Nepalese War) in 1816 located the Kali River as Nepal's western boundary with India. The discrepancy in locating the source of the river led to boundary disputes between India and Nepal, with each country producing maps supporting their own claims. - Susta: Susta area is one of the disputed territories between India (Uttar Pradesh) and Nepal. - Susta is located on the bank of the Gandak river (called Narayani river in Nepal).