evidence: Nawalparasi District (Nepali: नवलपरासी जिल्ला, pronounced [nʌwʌlpʌˈɾasi] ), part of which belongs to Gandaki Province and part to Lumbini Province, was one of the 75 districts of Nepal before being divided into Parasi District and Nawalpur District in 2015. The district, with Parasi as its district headquarters, covered Parasi region (present-day Nawalparasi West) and Nawalpur region (present-day Nawalparasi East) with an area of 2,162 square kilometres (835 sq mi) and had a population (2011) of 643,508. [...] Nawalparasi district is connected to Rupandehi District on the west, Palpa and Tanahun Districts on the north, Chitwan District on the east and south and the Indian border. The longest road of Mahendra highway, 99 km in length, lies in this district. Major cities of Nepal such as Butwal, Siddharthanagar, Tansen and Bharatpur metropolitan municipality are located in neighbouring districts.