evidence: Susta is situated on the east of Narayani River in mid-southern part of Nawalparasi district in the pointed portion left over by the floodwater. On its west is the flow of the Narayani river, and it is surrounded by India on the north, east and south by a curved boundary line. One can reach there after travelling about 25 kilometers south-east from Parasi bazaar, the district headquarter to Pakalihawa VDC and another 20 to 25 minutes boat ride across the Narayani River. Susta VDC was merged with the Tribeni VDC in 1980. Presently the area along the banks of the river on the north of Susta has been called ward number 4 of the Tribeni VDC. The Susta area came within the Nepali territory when the British returned the Tarai region from Koshi to Rapti Rivers on 11 December 1816 instead of paying Rs. two hundred thousand annually, as per Article 4 of the Treaty of Sugauli. The work to erect border pillars along the Susta borderline was started in 1829, and in 1883-84-85 the border map was also prepared.